Soudal Fix All High Tack

Health & Safety Recommendations

Before using Soudal Fix ALL High Tack, read the packaging label and Safety Data Sheet in full and ensure all operatives understand the handling and application guidance. Observe normal site hygiene at all times. Wear suitable PPE including gloves and eye protection, and keep the work area well ventilated during application and throughout the curing period, particularly in confined spaces and internal rooms with limited airflow.

Avoid unnecessary skin contact and prevent splashes into eyes. If contact occurs, rinse immediately with plenty of clean water and seek medical advice if irritation persists. Keep the cartridge out of reach of children and animals, and store away from food preparation areas. As with all high performance grab adhesives and sealants, maintain good housekeeping to reduce slip risks from spillages and keep tools, ladders, and surrounding surfaces clean.

Substrate Suitability

Soudal Fix ALL High Tack is a high tack SMX hybrid polymer adhesive sealant designed for bonding and sealing on a wide range of common construction materials. It adheres well to most usual building substrates, lacquered wood, many metals, many plastics, and PVC, making it suitable for trade bonding, sealing, and general building maintenance work where fast grab and a strong final bond are required.

The product is not suitable for polyethylene (PE), polypropylene (PP), PTFE (Teflon®), bituminous substrates, copper, or copper containing materials such as bronze and brass. Substrate composition can vary significantly between manufacturers, particularly with plastics and coated materials, so an adhesion and compatibility test should be carried out on every project before full application, especially where high loads, weather exposure, or long term movement are expected.

Surface Preparation

A strong bond depends on clean, stable surfaces. Substrates must be rigid, structurally sound, and free from dust, grease, oil, laitance, loose coatings, and weak surface layers. Surfaces should be dry or slightly moist, but not wet with standing water. Remove old sealant residues and any friable material so the adhesive sealant can contact a solid base.

For non porous substrates, clean and degrease using Soudal Cleaner & Degreaser, allowing solvents to fully flash off before application. For optimum adhesion on critical work, surface activation is recommended using Soudal Surface Activator, particularly on smooth or low energy finishes. For porous substrates in water loaded applications, prime using Soudal Primer 150 to stabilise the surface and support consistent adhesion. When bonding plastics, remove all protective films and manufacturing residues such as release agents and processing aids, as these can prevent wetting and cause premature bond failure.

Application Method

Soudal Fix ALL High Tack is applied using a standard caulking gun. Cut the nozzle to suit the intended bead size, then apply the product in a controlled, continuous manner to avoid air pockets. When sealing joints, apply an even bead into the joint and ensure the sealant makes full contact with both sides of the joint. Tool immediately before skin formation, as skinning typically begins at around 5 minutes depending on site conditions. Use a lightly soapy solution on the finishing tool to achieve a neat profile, taking care that the solution does not contaminate the joint edges, as this can reduce adhesion.

When bonding, apply the product in beads or dots to one substrate, always including a bead near edges and around corners of panels to support stability and reduce edge lift. Bring substrates together promptly and press firmly, as applied pressure, rather than the duration of pressure, has the greatest influence on ultimate bond strength. Where components are heavy, under tension, or fitted overhead, temporary support may still be required until sufficient cure has developed. Avoid smudging adjacent visible surfaces during application, masking tape along joint edges can help maintain a clean finish and simplify detailing.

Joint Dimensions

Correct joint design supports long term performance and helps the product retain elasticity. For bonding lines, the minimum practical bead width is 2mm and the maximum is 10mm, with the aim of achieving continuous contact without excessive squeeze out. For sealing joints, the minimum joint width is 5mm and the maximum is 30mm, with a minimum depth of 5mm.

For general sealing work, a reliable rule is joint width equals 2 times joint depth, which supports movement capability and reduces stress within the cured seal. In larger joints, use a PE backer rod to control depth and prevent three sided adhesion, which can restrict movement and increase the risk of edge failure. Joint dimensions should be planned to suit expected movement, exposure, and the geometry of the materials being joined.

Coverage

Coverage depends on bead size, joint dimensions, and application technique. For sealing work, estimate requirements by calculating joint volume and allowing for practical losses due to nozzle trimming, tooling, and starting and stopping. For a quick and reliable guide, refer to the Platinum Chemicals Online Estimate Calculator, which helps convert joint width and depth into cartridge quantity for typical sealant applications.

When bonding, coverage varies significantly because bead patterns differ between jobs. Beads placed around panel edges and at fixing points use more material than a simple central bead, while uneven substrates may require a thicker application to maintain contact. For ordering and scheduling, measure the intended run lengths and plan the bead pattern in advance, then allow a sensible contingency for site variation.

Curing Time

Fix ALL High Tack cures by moisture curing and develops a surface skin quickly, typically in around 5 minutes under normal conditions. Curing speed is approximately 3mm per 24 hours, so thicker beads and deeper joints will take longer to cure through. Temperature, humidity, ventilation, and substrate type all influence curing, warm and humid conditions generally accelerate cure, cold or very dry conditions slow it down.

Avoid disturbing the joint during early cure. Heavy loading should be delayed until the product has cured sufficiently for the bead thickness, particularly for structural style bonding or where components could shift. If overpainting is required, allow the sealant to cure properly first, as paint applied too early can impair finish quality. Fix ALL High Tack can be overpainted with water based paints, but paint compatibility should be tested, and alkyd resin based paints may dry more slowly over sealant.

Cleaning

Remove uncured product immediately using Soudal Swipex Wipes, particularly on non porous surfaces and tools. Clean up promptly, as the product skins quickly and becomes harder to remove as curing begins. For best results, keep wipes available during application and wipe excess from adjacent surfaces before tooling.

Once cured, the product can only be removed mechanically. Where removal assistance is required, use Soudal Sealant Remover Spray to help soften residues before scraping, then finish with a suitable surface clean to remove any remaining film. Always test cleaners on a small, inconspicuous area first, especially on plastics, coated metals, lacquered finishes, and delicate decorative surfaces.

Limitations

Fix ALL High Tack is not suitable for PE, PP, PTFE (Teflon®), bituminous substrates, copper, or copper containing materials such as bronze and brass. It is not suitable for applications involving continuous water immersion. It should not be used on self cleaning glass, use Soudal SMX 506. It is not a glazing sealant, for glazing and perimeter window sealing use Silirub 2 or Silirub LMN, for areas of high humidity use Soudal Stay Fresh Neutral.

For polycarbonate, use Silirub PC, as plastic formulations can be sensitive and vary by manufacturer. For aquariums, use Silirub AQ. Fix ALL High Tack can be used for bonding natural stone, but it should not be used as a joint sealant on natural stone, use Silirub MA or Fix ALL Flexi. Avoid contact with plasticiser releasing materials such as bitumen, tar, EPDM, neoprene, butyl, as this can lead to discoloration and loss of adhesion, for EPDM use Silirub EPDM. The product has good UV resistance but may discolour under extreme conditions or after prolonged UV exposure, and chemical exposure can also affect appearance over time.

Other Information

Apply only within the recommended application temperature range of +5°C to +35°C. Once cured, the sealant is serviceable between -40°C and +90°C, which suits many interior and exterior building applications. Store unopened cartridges in a cool, dry place, away from direct sunlight and frost, and follow stock rotation to maintain best workability and consistent results.

When using different reactive joint sealants in close proximity, ensure the first product is fully cured before applying the next. The surface should not be contaminated by finishing solutions or cleaning agents during tooling, only dip the finishing tool rather than applying solution onto the joint edges. In sanitary environments, XS1 fungicide supports mould resistance, but it does not replace regular cleaning, persistent deposits and soap residues can still encourage biological growth. For best outcomes on site, plan bead design, joint dimensions, and finishing steps before starting work to maintain clean lines and consistent adhesion across the full run.

Q) What is Soudal Fix ALL High Tack and what is it designed to do?

A) Soudal Fix ALL High Tack is a high performance, one component adhesive sealant based on SMX Polymer technology. It is designed for jobs where you want strong immediate grab to hold parts in place quickly, plus a very strong long term bond once cured. Because it cures neutral and remains permanently elastic, it can both bond and seal rather than acting like a brittle rigid adhesive. It suits interior and exterior use in all weather conditions, and it adheres to many porous and non porous building materials, even when surfaces are slightly damp or humid, provided they are clean and sound.

Q) Is Fix ALL High Tack an adhesive, a sealant, or both?

A) Fix ALL High Tack is both. It behaves like a grab adhesive during installation, giving high initial tack so items stay positioned, but once cured it also functions as an elastic sealant that can close gaps and maintain an airtight, watertight joint. This combination is useful on real building details where parts move slightly with temperature, vibration, or minor settlement. You can bond trims and components, then continue the bead to seal the perimeter without switching products. It is still important to treat it like a system, because preparation, joint design, and cure time are what turn a good product into a reliable long term result.

Q) What does neutral curing mean for Soudal Fix ALL High Tack in practical use?

A) Neutral curing means Soudal Fix ALL High Tack hardens without releasing aggressive, corrosive by products, which supports broader compatibility across mixed substrates. In practical terms, it is more comfortable to use indoors due to low odour, and it is generally kinder to common construction materials than acidic cure products. Neutral cure also supports clean finishing on painted and coated surfaces where discolouration or surface attack is a concern. It still needs proper surface preparation, but you are less likely to run into issues when bonding typical fit out materials together, such as timber, PVC trims, metals, and many sealed or painted backgrounds.

Q) How strong is Fix ALL High Tack and what does 320kg/10cm² actually mean?

A) Fix ALL High Tack can reach a final bond strength up to 320kg/10cm² on suitable substrates under correct conditions, which is why it is chosen for demanding fixing. The figure is a laboratory style indication of potential strength, not a guarantee for every job. Real performance depends on substrate stability, cleaning, bead thickness, and how firmly parts are pressed together to wet out the adhesive. Use bead patterns that allow moisture to reach the sealant so it can cure, and support heavy or awkward items until enough curing has developed through the bead. A strong bond is built by good contact, not by squeezing out every last bit of material.

Q) What are the most common jobs people use Soudal Fix ALL High Tack for?

A) Soudal Fix ALL High Tack is commonly used for fixing skirting boards, architraves, coving, decorative trims, profiles, and many lightweight panels where immediate grab helps keep alignment tidy. It is also used for bonding brackets, trunking, covers, and general components to masonry, timber, painted surfaces and many metals. Because the tack is high, it often reduces the need for pins or props, although heavy parts may still need temporary support. The cured bead stays elastic, so it suits joints that see vibration or temperature movement, including partitions, door linings, and day to day maintenance work where rigid adhesives can crack or debond.

Q) Can Fix ALL High Tack be used outdoors and how does it cope with UK weather?

A) Yes, Fix ALL High Tack is suitable for exterior bonding and sealing on compatible substrates, and it has good resistance to weathering and UV for typical building use. Once cured it remains serviceable from -40°C to +90°C, so it copes with seasonal swings and sun warmed surfaces. Outdoor success still relies on preparation and timing. Do not apply onto dusty, unstable, greasy, or waterlogged materials, and protect fresh beads from heavy rain before the surface has skinned. Where joints will see regular water run off, design the detail so water is not driven behind the bond line, and avoid relying on the product for continuously saturated conditions.

Q) Can Soudal Fix ALL High Tack be applied to slightly damp or humid surfaces?

A) Fix ALL High Tack can be applied to many slightly damp or humid surfaces, which helps when perfect dryness is difficult on refurbishment work. Slightly damp is not the same as wet or contaminated. Remove standing water, wipe away heavy condensation, and ensure the substrate is sound and grease free so the product can wet out properly. On non porous materials, clean using Soudal Cleaner & Degreaser and allow it to flash off before bonding. On dusty or absorbent backgrounds, priming with Soudal Primer 150 can stabilise the surface and improve consistency. If the surface is unknown or coated, do a small test bond first, especially where load or weather exposure is involved.

Q) Is Fix ALL High Tack suitable for bathrooms and kitchens, and does it resist mould?

A) Fix ALL High Tack contains XS1 fungicides, which helps resist mould growth on the sealant surface in humid areas such as bathrooms, kitchens, and utility rooms. It is useful where you want a strong elastic bond for trims and fittings, plus a sealed edge that stays flexible during cleaning and temperature changes. Mould resistance is not magic. The joint still needs good preparation, so remove soap film, limescale, and old sealant fully, then let the area dry as much as possible before applying. Good ventilation and regular cleaning remain important, because heavy deposits and residues can encourage growth on any sealant surface over time.

Q) Can Fix ALL High Tack be used on natural stone without staining?

A) Fix ALL High Tack is suitable for bonding porous natural stones such as marble and limestone without staining, which makes it useful for fixing stone details where appearance matters. The key is to bond onto clean, stable stone and avoid spreading uncured material across the face. If you are sealing joints on natural stone, a dedicated sealant such as Silirub MA or Fix ALL Flexi is usually the safer choice, because joint sealants need reliable movement capability and clean finishing on stone edges. Always do a small compatibility test on the specific stone and finish, especially if the stone has been sealed, waxed, or treated, as surface treatments can affect adhesion.

Q) Can Soudal Fix ALL High Tack be painted, and when should I paint it?

A) Soudal Fix ALL High Tack can be overpainted with many water based paints once it has cured, which helps the joint blend into surrounding décor on trims and interior finishes. Allow adequate curing time first, because paint applied too early can affect finish quality and slow curing through the bead. Do a small compatibility test with the exact paint system you plan to use, because paint flexibility varies and a brittle paint film can crack on a moving joint. Water based acrylic finishes are usually a good starting point when overpainting elastic sealants. If appearance is critical, check the final paint sheen and edge coverage, as these often highlight uneven tooling more than the sealant itself.

Q) How flexible is Fix ALL High Tack and what movement can it accommodate?

A) Fix ALL High Tack cures to a firm but elastic rubber and is rated for joint movement up to ±20% when the joint is correctly designed and bonded to stable substrates. This flexibility helps it cope with vibration, thermal expansion and contraction, and minor building settlement without cracking or losing edge contact. It is not intended for very large movement expansion joints where wide joints and specialist joint design are required. If you are sealing a glazing or façade movement joint, use a dedicated glazing sealant such as Silirub 2 or Silirub LMN. For the best elastic performance, avoid three sided adhesion in deeper joints by using a suitable backer rod and keeping joint faces clean and sound.

Q) How should I store Fix ALL High Tack and what application temperatures are best?

A) Store Fix ALL High Tack upright in a cool, dry place, out of direct sunlight and protected from frost, and keep cartridges sealed until use. On site, avoid leaving it in a hot van for long periods, because excessive heat can affect extrusion and working time. Apply within the recommended application temperature range of +5°C to +35°C, and aim for stable conditions while the bead skins. Cold, dry air can slow curing, while warm, humid conditions and good airflow support faster cure. Once cured, the joint is typically serviceable from -40°C to +90°C, but storage and application conditions are what most influence how cleanly and consistently the job goes in the first place.

Q) Which materials does Fix ALL High Tack bond to well, and which should be avoided?

A) Fix ALL High Tack bonds to many common construction materials, including masonry, concrete, timber, many metals, PVC, and numerous painted or coated surfaces when properly prepared. It is not suitable for low surface energy plastics such as PE, PP and PTFE (Teflon®), and it should not be used on bituminous substrates. Avoid copper and copper containing materials such as bronze and brass. Be cautious with stress loaded bonding on PMMA and polycarbonate, because crazing or stress cracking can occur. Where polycarbonate sealing is required, use Silirub PC. Because coatings and plastics vary widely by manufacturer, a small adhesion and compatibility test is a sensible step whenever the substrate is unfamiliar or the detail is critical.

Q) How should surfaces be prepared before using Soudal Fix ALL High Tack?

A) Good preparation is the fastest route to reliable results. Substrates should be rigid, stable, and free from dust, grease, oil, loose paint, and old sealant residue. On non porous materials, clean and degrease using Soudal Cleaner & Degreaser, then allow it to flash off fully. On smooth or difficult finishes, use Soudal Surface Activator where improved wetting is needed. On porous, dusty or friable backgrounds, priming with Soudal Primer 150 can stabilise the surface and support consistent adhesion. Remove release agents and protective films from plastics, and wipe away site contamination such as hand oils. If you are unsure about a finish or coating, do a small test bond first and check adhesion after curing.

Q) How do I apply Fix ALL High Tack for bonding trims, panels and fittings?

A) Apply Fix ALL High Tack with a standard caulking gun. Cut the nozzle to suit the bead size, then apply beads or dots to one substrate. For panels, include a continuous bead near edges and corners, plus additional beads across the field to reduce drumming and improve contact. Bring the parts together before skin formation, which is typically around 5 minutes depending on conditions, and press firmly, because contact pressure is a major factor in final strength. Immediate tack helps hold alignment, but use temporary support for heavy items, overhead work, or uneven backgrounds. Avoid applying in large solid patches that trap moisture, because controlled beads cure more predictably and help maintain strength across the bond line.

Q) How do I use Soudal Fix ALL High Tack as a sealant and get a neat bead?

A) For sealing, apply a continuous bead so it makes full contact with both sides of the joint and fills the gap without air pockets. Keep the nozzle angle consistent and push the material into the joint rather than dragging it across the surface. Tool promptly, because skinning typically begins in around 5 minutes depending on conditions. Use a profiling tool and keep finishing liquids controlled so they do not contaminate the adhesion faces at the joint edges. If a sharp finish is needed on glossy or painted surfaces, mask both sides first, tool the bead, then remove the tape straight away while the sealant is still workable. Work in short sections so the finish stays consistent.

Q) What joint dimensions work best with Fix ALL High Tack for sealing work?

A) For sealing, a practical minimum is 5mm joint width and 5mm joint depth, with a maximum joint width up to 30mm where the detail allows. A common guide is joint width equals 2 times joint depth, which supports elastic movement and reduces internal stress. Where joints are deep, use a suitable PE backer rod to control depth and prevent three sided adhesion, which can restrict movement and increase the chance of edge failure. Keep joint faces clean and sound, and avoid trying to bridge unstable gaps with excessive sealant thickness. If movement is expected to be higher than ±20%, choose a product specified for higher movement capability and design the joint accordingly.

Q) How long does Fix ALL High Tack take to cure, and when can it be loaded or exposed to rain?

A) Fix ALL High Tack typically forms a skin in around 5 minutes, then cures through the bead at roughly 3mm per 24 hours, with speed affected by temperature, humidity, airflow and bead thickness. Early grab helps positioning, but do not heavily load the bond until curing has developed through a meaningful depth of the bead. For exterior work, protect the joint from heavy rain and water run off until the surface has skinned and is stable, and avoid wash down or cleaning too soon on fresh joints. In cold or very dry conditions, allow extra time before loading, painting, or putting the joint into service, especially where the bead is thick or the part is under tension.

Q) How do I clean up Fix ALL High Tack, and how do I remove it once cured?

A) Clean uncured Fix ALL High Tack immediately. Use Soudal Swipex Wipes on tools and non porous surfaces, and replace wipes frequently to avoid smearing residue. If masking tape is used, remove it straight after tooling to leave a crisp edge. Once cured, removal is mainly mechanical, so lift the bead carefully and scrape residues away without damaging the substrate. Where helpful, use Soudal Sealant Remover Spray to soften stubborn remnants before scraping, then clean the surface. Always test removers on a small hidden area first, especially on plastics, coated metals, painted surfaces and delicate finishes. Plan clean up as you go, because once the product skins it becomes harder to wipe cleanly.

Q) What are the key limitations of Soudal Fix ALL High Tack, and what should I use instead?

A) Fix ALL High Tack is not suitable for PE, PP, PTFE (Teflon®), bituminous substrates, or copper and copper containing metals such as bronze and brass. Avoid stress loaded bonding on PMMA and polycarbonate, and for polycarbonate use Silirub PC. It is not a glazing sealant, so for glazing joints use Silirub 2 or Silirub LMN, and on self cleaning glass use Soudal SMX 506. It is not suitable for aquariums, so use Silirub AQ, and do not specify it for continuous water immersion. Avoid contact with plasticiser releasing materials such as EPDM, neoprene and butyl, and for EPDM use Silirub EPDM. For bitumen based detailing, use Soudal Soudafalt.

Technical Data Sheet

Fix-All Product Selector

Declaration of Performance (DoP)

Safety Data Sheet