For everyday sealing and general construction work, Soudafoam Gap Filler Expanding Foam is usually the starting point. It is a general purpose polyurethane expanding foam with high three dimensional expansion, excellent thermal and acoustic insulation and primerless adhesion on most construction materials. It is used for filling around pipe penetrations, gaps between insulation boards and masonry, voids in stud walls and other irregular spaces where a standard sealant would be slow or impractical. Once cured it can be cut, sanded, painted or plastered to blend into the surrounding surface.

The wider Soudal Gap Filler range is built around the same principle of high volume yield for large voids. It gives you dense insulation and a robust airtight seal across bigger gaps, which is especially useful in refurbishment work where openings are rarely uniform. When projects demand higher fire performance at the same time, B2 Fire Class Trade Expanding Foam provides a fire rated alternative. It is a gun grade foam that expands strongly, insulates well and achieves a B2 fire classification, so it is suited to sealing larger penetrations in fire resisting walls and around fire retardant frames when used in accordance with the relevant details.

Genius Gun Gap Filler covers the same kind of everyday voids for users who would rather not invest in a separate foam gun. The patented Genius Gun trigger mechanism gives much better control over flow and bead size than a throwaway straw, and the re-sealable cap lets the can be stored for several weeks between uses. That makes it a good fit for maintenance teams, facilities managers and DIY users who still want a professional finish but use foam less often.

Around windows and doors, you need controlled linear expansion rather than a big uncontrolled fill. Soudafoam Window & Door Expanding Foam is formulated specifically for sealing around PVCu, aluminium and timber frames. It provides excellent thermal and acoustic insulation with a window and door filling formulation that expands in a more predictable way along the frame perimeter. In gun grade form it works through professional PU foam guns, giving excellent control, repeatable bead size and efficient use of each can.

When you need more metres of frame sealed per can, Soudafoam Window & Door XTRA is the high yield option. It is a premium quality, high yield expanding foam that can give up to around fifty percent more linear metres of filling than standard Soudafoam Window & Door at similar bead sizes. That extra yield makes a noticeable difference on larger glazing packages, multi-light windows, patio doors and commercial jobs where foam usage is high. The formulation still delivers excellent thermal and acoustic insulation, so you are getting more coverage without compromising performance.

Soudafoam Window & Door SWS takes things further for modern A, A+ and A++ rated frames where airtightness is a priority. It is an airtight, acoustic and thermal insulation foam filler designed to be totally airtight after curing. Combined with suitable membranes and airtight tapes, it helps create a continuous airtight seal around the frame, improving both comfort and energy efficiency. It is based on Flexifoam Technology so it remains highly flexible after curing, is suitable for use in colder conditions and offers excellent adhesion to most construction materials.

For users who prefer a self-contained option but still want frame-specific performance, the Genius Gun Window & Door Trade Expanding Foam brings the same window and door formulation into a can with an integrated trigger and lock. It delivers a controlled bead around frames without needing a separate gun, which is ideal for occasional installers, small contractors and maintenance teams.

Where fire performance is required, choosing the correct fire rated foam is critical. Soudafoam FR HY is a high yield fire rated expanding foam filler with fire resistance of up to around 240 minutes in tested configurations. It combines very high yield with excellent adhesion and strong thermal and acoustic insulation properties, making it suitable for treating linear joints, service penetrations and frame perimeters within fire rated walls and floors when used as part of an approved system. The high yield reduces can changes on larger jobs without sacrificing performance.

Soudal B2 Fire Class Trade Expanding Foam provides an additional fire foam option. B2 foam is designed for joints and gaps where a B2 fire classification is specified and expands significantly, giving a robust fill with good insulation values. All fire rated foams must be installed in line with test data and the technical data sheet, particularly with regard to joint dimensions, backing materials and overfinishing. The foam is only one element in the fire stopping solution and is typically combined with appropriate sealants, collars or wraps at penetrations.

Soudafoam 2K is the fast curing specialist in the range. It is a two-component expanding foam supplied in a self-contained can that combines a base component with an isocyanate component when activated. Because the curing reaction is chemical rather than moisture-dependent, Soudafoam 2K cures rapidly to a dense, strong foam structure even in thicker sections and in conditions where humidity is low. This makes it ideal for time critical work such as fixing door frames, setting posts or carrying out repairs where you want high early strength and minimal waiting time.

Soudafoam SMX offers an environmentally friendlier alternative to conventional PU foam. It is based on SMX polymer technology rather than classic isocyanate PU and is designed to deliver excellent thermal and acoustic insulation with minimal environmental impact. The formulation is isocyanate free and still bonds well to most construction substrates, so it suits users and projects where reducing isocyanate exposure and improving sustainability credentials are important. It is commonly used for general gap filling and sealing work in both residential and commercial projects where greener options are preferred.

When you need to bond rather than just fill, Soudabond and Soudal Plasterboard Adhesive Foam replace traditional mortar and many conventional cartridge adhesives. Soudabond EASY is a multi-purpose PU adhesive foam for bonding insulation panels, fibro-plaster and cardboard plaster panels and non-loadbearing internal walls. It is supplied as a Gun Grade foam and also in a Genius Gun format, so you can choose between a professional gun setup and a self-contained can depending on how frequently you use it. It offers quick drying, strong adhesion and eliminates mixing, making panel work significantly faster and cleaner than using powder adhesives.

Soudabond TURBO is the rapid set option in the range. It is a single component PU adhesive foam formulated to cure up to roughly three times faster than standard adhesive foams, with an open time of around three minutes and cutting or handling strength from about twenty to thirty minutes. It is ideal for fast track programmes where boards need to be fixed and work moved on quickly, such as insulation upgrades, shopfitting and time sensitive refurbishments.

Soudabond PLASTERBOARD is aimed squarely at plasterboard fixing. It is a gun grade PU adhesive foam that provides a clean, consistent way to fix boards to masonry or studwork without mixing mortar. It offers excellent coverage per can, good adjustability during positioning and rapid curing, so taping and jointing can begin sooner. Soudal Plasterboard Adhesive Foam sits alongside it as another supremely fast curing PU plasterboard adhesive, available in both gun grade and Genius Gun cannisters. Both products bypass the mess and variable working times of mortars and are popular on drylining jobs where productivity and cleanliness matter.

For masonry units, Soudabond BLOCKS is the go-to foam adhesive for aerated blocks and other non-loadbearing blockwork. It is formulated to give a semi collapsible bead that accommodates minor irregularities, helping to achieve neat, accurate internal partitions in real site conditions. For structural timber work, Soudabond TIMBER is a high yield PU wood adhesive foam used on joists, deck boards and sheet materials. It fills slight gaps, cures quickly and helps prevent squeaky floors by forming a solid bond across the entire contact area.

The Genius Gun Range is designed for users who want the control of a foam gun without carrying separate tools. Each Genius Gun can has an integrated trigger and flow control with a re-sealable cap that keeps the foam usable for several weeks in many cases. Soudal Gap Filler Expanding Foam in Genius Gun format gives you a general purpose gap filler for everyday voids and penetrations with much neater control than a disposable straw, while still delivering strong thermal and acoustic insulation values.

Genius Gun Window & Door Trade Expanding Foam provides a window and door formulation that is tailored to sealing around frames in a self-contained can. It is a good choice if you install windows and doors occasionally or need a reliable window foam in a service vehicle without wanting a full gun system. Genius Gun Roof & Insulation Trade Expanding Foam does a similar job on roofs and insulation work, making it easier to seal around tiles, slates, fibre cement sheets and insulation boards such as PIR and EPS without cutting lots of odd shaped pieces. Soudabond EASY in Genius Gun format rounds out the range by offering a multi-purpose PU adhesive foam for panels and boards with the same simple trigger operation. Together these products bring Soudafoam and Soudabond technology to users who prefer self-contained cans but still need precise application.

For regular trade users, gun grade foams are the default because they give the best control and yield. To support that, Platinum Chemicals stocks specialist foam guns including the Soudal Profi PU Foam Gun and the Soudal Red PU Expanding Foam Gun. The Profi gun is a heavier duty applicator with improved spray ability and a smooth, balanced action that makes it comfortable for daily use. The Red gun is a robust metal gun that offers excellent value for money while still delivering reliable control, making it a sensible choice for general trade and serious DIY. Both are compatible with the Soudafoam and Soudabond gun grade ranges.

Cleaning and maintenance are just as important as choosing the right foam. Soudafoam Gun & Foam Cleaner is designed to flush uncured foam from guns and valves, either by connecting directly to the gun or via a spray nozzle for external cleaning. It helps prevent blockages and keeps the needle and nozzle working smoothly. Once foam has cured, mechanical removal is usually required, but Soudal Cured PU Expanding Foam Remover can soften stubborn residues on many surfaces to make cleaning easier. Swipex Hand Cleaning Wipes are useful for removing uncured foam and adhesive from skin and tools and are a good addition to any foam kit. Keeping guns clean, closing flow screws after use and storing cans correctly all contribute to consistent bead control, maximum yield and long service life from your equipment.

Q: Which Soudal foam should I use for general gap filling and penetrations?

A: For everyday sealing and void filling around pipe penetrations, services, insulation boards and irregular masonry gaps, Soudafoam Gap Filler is usually the starting point. It is a general purpose polyurethane expanding foam with high three dimensional expansion and good thermal and acoustic insulation. On the trade side we also offer Soudal Trade Gap Filler, which delivers similar performance in a Genius Gun format. Where a specification calls for fire performance as well as filling, Soudal B2 Fire Class Trade Expanding Foam gives a DIN 4102 B2 classified alternative for joints and openings within approved fire stopping details.

Q: Which product is best for sealing around windows and doors?

A: Around frames you need controlled linear expansion so the foam seals without distorting the frame. The main choices here are Soudafoam Window & Door, Window & Door XTRA and Window & Door SWS. These are formulated for predictable expansion along the frame perimeter, with strong adhesion to PVCu, aluminium and timber, plus good thermal and acoustic performance. For installers who prefer an integrated applicator, Soudal Window & Door Expanding Foam in Genius Gun form is available. These products are ideal for filling the perimeter joint in combination with appropriate internal and external sealants or tapes where required.

Q: When should I use Soudafoam FR HY or Soudal B2 Fire Class expanding foam?

A: Soudafoam FR HY is a high yield fire rated expanding foam for linear joints, service penetrations and frame perimeters within tested fire rated wall and floor details. It offers extended fire resistance in appropriate configurations along with strong insulation values. Soudal B2 Fire Class Trade Expanding Foam is a gun grade foam formulated to meet DIN 4102 B2, used where that classification is specified for gaps and voids. In both cases the foam should be used as part of a complete, tested fire stopping or fire door assembly rather than as a stand alone fire protection measure.

Q: When do I switch from expanding foam to Soudabond EASY or the Soudabond PLASTERBOARD, BLOCKS or TIMBER products?

A: Expanding foams such as Soudafoam Gap Filler are ideal when the priority is filling and insulating voids. When the main requirement is to bond a board or element to a substrate, Soudabond PU Adhesives come into their own. Soudabond EASY is a general purpose foam adhesive for insulation panels and non load bearing internal partitions. Soudabond PLASTERBOARD is tailored for fixing plasterboard. Soudabond BLOCKS and TIMBER are formulated for block and stonework or timber construction. Soudal Plasterboard Adhesive Foam sits alongside these as a very fast curing option for fixing boards directly.

Q: Where do Soudafoam SMX and Soudafoam 2K fit into the range?

A: Soudafoam SMX is an environmentally friendly, isocyanate free expanding foam based on SMX polymer technology. It is designed for professional projects that need excellent thermal and acoustic insulation while reducing isocyanate exposure and improving sustainability credentials. Soudafoam 2K is a two component, fast curing polyurethane foam supplied in a self contained can. It cures chemically rather than relying on ambient moisture, so it hardens quickly to a dense, high strength foam even in thicker sections and in low humidity conditions. It is often used where rapid handling strength and a tougher foam structure are important.

Q: What is the difference between gun grade foams and Genius Gun cans?

A: Gun grade foams are supplied in tins that screw onto a separate PU foam applicator gun. This gives very fine control over bead size, start and stop, and overall yield, which is ideal for frequent users and detailed window or joint work. Genius Gun cans are self contained and incorporate the handle, trigger and nozzle on the can itself, so you get a more controlled application than a basic straw without carrying a separate tool. Most Soudafoam and Soudabond products we stock are gun grade, with carefully selected Genius Gun versions for certain gap filling and board fixing tasks.

Q: Why do many installers prefer using a foam gun with Soudafoam gun grade cans?

A: A good foam gun, such as the Soudal Red Expanding Foam Gun or the Soudal Profi PU Expanding Foam Gun, turn Gun Grade Expanding Foam into a very precise tool. You can adjust the trigger for a thin bead or a heavier fill, restart the flow cleanly and work one handed when you are fixing or supporting components with the other hand. Provided the gun is cleaned properly, you can also leave a can mounted for ongoing work, which reduces waste compared to disposable straws. This level of control makes gun grade Soudafoam the default choice for most trade window, door and joint sealing jobs.

Q: How should I clean foam guns and surfaces after using Soudal expanding foam?

A: Fresh, uncured foam should be removed immediately with Soudafoam Gun and Foam Cleaner. The can connects directly to the applicator gun to flush the barrel, or can be used with the spray nozzle to clean valves and surfaces before the foam sets. Once foam has fully cured it will not dissolve, so mechanical removal is usually required. For stubborn residues on suitable non porous surfaces, Soudal Cured PU Expanding Foam Remover can soften the foam to make scraping easier. Always test removers on a small area first and follow the substrate guidance on the product page.

Q: Can I reuse a part used can of expanding foam?

A: Short term reuse is often possible, but only if the gun and valve are kept clean and pressurised. After each session it is important to close the control knob on the gun, wipe off any excess foam and use Soudafoam Gun and Foam Cleaner to clear the nozzle and adapter. If the valve or gun barrel is allowed to clog with cured foam the can will normally be lost. For this reason most professionals try to plan work so that a can is used up in as few sessions as possible and always follow the handling advice printed on the tin.