10 Best Diy Spray Foam Insulation Kit in The UK

Last updated on 21/07/2025

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Demsun P90 Thermal & Acoustic Spray Foam – 12 x 850ml Can | Expanding Polyurethane Insulation Foam for Heat & Soundproofing | Easy to Apply, Strong Adhesion for Walls, Roofs, Floors (12)

3% Off

Why We Love It

Exceptional heat and sound insulation.
Promotes energy efficiency.
Easy and versatile application.

Main Highlights

Dual Insulation Power – Heat & Soundproofing in One Can Experience superior thermal and acoustic insulation with Demsun P90. Ideal for reducing heat loss and dampening noise, it creates a more comfortable and energy-efficient indoor environment.
Expands Up to 3cm – Perfect for Gaps & Uneven Surfaces This high-performance PU foam expands seamlessly to fill cracks, joints, and voids, ensuring airtight insulation with minimal effort. One can covers more than you expect.
Strong Adhesion on All Building Materials Whether you're working with concrete, wood, metal, stone, or plaster, Demsun P90 bonds firmly to almost any surface—making it ideal for both renovation and construction projects.
Fast & Easy Application – DIY Friendly Designed for effortless use with standard foam guns, the formula cures quickly and applies smoothly, saving time while delivering professional-grade results—perfect for both professionals and DIYers.
Reliable Performance – Water-Resistant & Durable Once cured, the foam forms a tough, water-resistant barrier that resists shrinkage, movement, and weathering. Built to last in roofs, floors, walls, attics, basements, and more.

Gap Filler Expanding Foam Soudal Kit 6 x 750ml Cans 1 x Gun 1 x Cleaner

Why We Love It

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Main Highlights

Gap Filler Expanding Foam Soudal Kit 6 x 750ml Cans 1 x Gun 1 x Cleaner
Brand : Truly PVC
Product type: BUILDING MATERIAL

12 x PENOSIL DIY Easy Spray Foam Insulation 700ml Can

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Why We Love It

Unique spray applicator included.
Highly efficient insulation properties.
Durable and long-lasting formula.

Main Highlights

PENOSIL Easy Spray Foam Insulation. DIY Sprayable Foam Sealant with unique spray applicator for the best insulation experience.
The combination of EasySpray’s special formula and spray applicator creates a unique foam structure with highly efficient acoustic and thermal insulation and great airtightness properties. The thickness of insulation layer is freely selectable, and the number of layers is not limited.
Using accompanying spray nozzle allows to insulate uneven or hard to reach surfaces, where it is impossible to use traditional insulation materials. Sealing all hard to reach parts of construction with unique elastic formulation helps to reduce cold bridges in complex structures and also to reduce the risk of cold bridge appearance due to possible movements in the construction.
EasySpray All Surfaces sprayable foam can be successfully used on uneven and round surfaces like pipes, tanks and vessels. Insulating cold surfaces with EasySpray sprayable foam is a good remedy to avoid condensation.
A reliable product, sustainable and durable with long-lasting properties.

Bond-It Fill & Fix Mate

Kit - 6 x 750ml Expanding Foam Cans, 1 x Professional Gun, 1 x 500ml Gun Cleaner PU Grade

Why We Love It

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Main Highlights

Kit 6 x 750ml Expanding Foam Cans 1 x Professional Gun 1 x 500ml Gun Cleaner PU Grade
Brand : Bond It Fill and Fix Mate
Product type: TOOLS

Polycraft ( MB Fibreglass )

Polycraft LD40 Expanding Polyurethane Foam - Hard/Rigid - 2 Litre Kit

Why We Love It

Eco-friendly foam protection.
Excellent compressive strength.
Versatile moulding applications.

Main Highlights

CFC & HCFC FREE Rigid Foam System
Good compressive strength, cell structure and other physical properties
Used in a wide variety of moulding applications where the foam needs gradual rise
Used in the thermal insulation of large panels, water heaters and storage tanks
Used within marine industry for buoyancy.

Bond-It Fill & Fix Mate

Kit - 3 x 750ml Expanding Foam Cans, 1 x Professional Gun, 1 x 500ml Gun Cleaner PU Grade

Why We Love It

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Main Highlights

Kit 3 x 750ml Expanding Foam Cans 1 x Professional Gun 1 x 500ml Gun Cleaner PU Grade
Brand : Bond It Fill and Fix Mate
Product type: TOOLS

10M x 32CM Self Adhesive Reflective Aluminium Foam Insulation 7mm Thick, Aluminum Bubble Heat Thermal Reflector Panels, Foil Insulation Roll for Floors, Roofs, Garage Doors and Camper Vans

Free Shipping

Why We Love It

Superb heat retention quality.
Convenient and user-friendly.
Broad application potential.

Main Highlights

Quality materials - Our thermal insulation foil reflectors are made from high quality rubber and plastic for excellent thermal insulation and heat retention, light weight, vapour proof, sound proof, light blocking, non-conductive, water and moisture resistant for long term use.
Easy to use - radiator reflectors are easy to use and install, simply cut the film to the required size and stick or fix to the surface. Self-adhesive design for long-lasting adhesion that won't come off easily and foldable design allows you to store easily.
Wide range of applications - Radiator foil insulation rolls can be used in both outdoor and indoor environments such as (wall insulation rolls, kitchen radiators, window insulation films, barrier covers, van insulation and heat reflective panels.
Warm in winter and cool in summer - In summer, the insulation foil bubble film reflects sunlight and insulates. It helps to keep the room cool even in strong sunlight. In winter, rooms stay warmer for longer because aluminium insulation film helps to keep the cold out and helps to retain heat rather than losing it.
Warm in winter and cool in summer - In summer, the insulation foil bubble film reflects sunlight and insulates. It helps to keep the room cool even in strong sunlight. In winter, rooms stay warmer for longer because aluminium insulation film helps to keep the cold out and helps to retain heat rather than losing it.

Polycraft ( MB Fibreglass )

Polycraft 022 Expanding Polyurethane Foam - Medium - 750g Polyfoam Kit

Why We Love It

Comfortable and supportive foam.
Environmentally friendly materials used.
Long-lasting and safe design.

Main Highlights

Polyurethane Mid-Density Medium Foam System
CFC Free
High Durability, Flexible
Water based system
Fire Retardant

500ml Gap Expanding Foam Filler PU Expansion Insulation BONDING Filling - 1x

Why We Love It

Seals gaps and cracks effectively.
Excellent for insulation purposes.
Ideal for various applications.

Main Highlights

500ml GAP EXPANDING FOAM FILLER PU EXPANSION INSULATION BONDING FILLING HLU Roof tile voids and draught points around the home. Gaps around pipe entries through walls. Gaps around window frames, door frames. Electrical wire chasing prior to plastering. Deep joints prior to applying sealant or plaster. Gaps and cracks in walls and floorboards.

Foam Gun, 2 Pack Expanding Foam Gun with 30 Nozzles, Spray Foam Gun, PU Foaming Gun, Insulating Applicator for Caulking, Filling, and Sealing, Ideal for DIY Projects and Professional Use

Free Shipping

Why We Love It

Convenient kit with extra nozzles.
Precision control reduces foam waste.
Durable and reliable aluminum construction.

Main Highlights

[Convenient Foam Gun Kit with 30 Nozzles] This package promises thoroughness, providing you with 2 professional silver metal 'Foam Guns' and an additional 30 nozzles. No need to fret about replacement parts when you have this spoiling bundle at your disposal.
[Precision Foaming Gun] The Foaming Gun allows for accurate regulation of foam flow with its convenient trigger. Minimized wastage and optimized usage - an economic choice for both DIY projects and professional use.
[Reliable Expanding Foam Gun] Trust in the sturdy construction of the expanding foam gun, fabricated from premium aluminum alloy. Bet on reliability of this expanding foam gun for tasks of caulking, filling, and sealing, without needing constant upkeep or care.
[Ergonomic Design and Easy to maintain and clean] The ergonomically designed foam gun makes it a great addition to your project. The locking valve allows for complete removal of residual foam, ensuring clean and efficient use. Ergonomic handles and perfectly sized nozzles provide a comfortable and precise application experience.
[Wide Application] The foam gun is suitable for sealing and insulation of cracks and cracks in different areas such as roof, exterior wall, floor, interior wall, interior partition wall, balcony door, bathtub, air conditioning hole, ceiling, basement, chimney and so on. Suitable for small and large projects to ensure efficient filling and sealing.

9.1

Superb

We scanned 1444 products

We reviewed these offers relevant to the Diy Spray Foam Insulation Kit within online retailers such as Amazon, eBay and other local retailers, ensuring we covered all major brands and models. The products we selected come from trusted brands like Demsun, Truly PVC Supplies, Penosil, Bond-It Fill & Fix Mate, Polycraft ( MB Fibreglass ), FWEEK, SFM Rapide, Rilcn, all of which have a reputation for consistently delivering high-quality products that users love and innovative approaches for function & design.

For the best Diy Spray Foam Insulation Kit in the market, we considered we took a deep dive into 7221 online reviews , focusing on elements like user satisfaction, performance in real-world conditions, and long-term reliability. Our ranking also evaluates each review’s relevancy, authenticity, up-to-dateness and depth so that the comparison is more sound.

We concluded that:

The clear winner of our analysis is Demsun P90 Thermal & Acoustic Spray Foam – 12 x 850ml Can | Expanding Polyurethane Insulation Foam for Heat & Soundproofing | Easy to Apply, Strong Adhesion for Walls, Roofs, Floors (12). We love many things about this product by Demsun. What sets it apart from the competition is Exceptional heat and sound insulation, Promotes energy efficiency, Easy and versatile application.
The best value product for most shoppers and where user satisfaction is continuously the highest is Gap Filler Expanding Foam Soudal Kit 6 x 750ml Cans 1 x Gun 1 x Cleaner by Truly PVC Supplies based on online reviews by bloggers, experts and online shoppers.
The biggest bargain at the moment for Diy Spray Foam Insulation Kit and the best cost-to-value ratio is Demsun P90 Thermal & Acoustic Spray Foam – 12 x 850ml Can | Expanding Polyurethane Insulation Foam for Heat & Soundproofing | Easy to Apply, Strong Adhesion for Walls, Roofs, Floors (12)at Demsun with a 3% discount.
Our list of the best Diy Spray Foam Insulation Kit is updated regularly to reflect new releases and changes in product availability, so be sure to check back often for the latest rankings and discounts.

10 Best Diy Spray Foam Insulation Kit in The UK

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We scanned 1444 products

We concluded that: