PU foam spray is canned expanding foam for sealing gaps around pipes, ducts, doors and windows.
Shake well and fill gaps about half way, as it expands.
What is a pu foam spray?
Polyurethane (PU) foam fills, seals and insulates gaps around pipes, ducts, doors and panels. Spray cans give expanding foam on site, while two-part systems made from polyol and isocyanate produce rigid foam for panels and cold rooms.
Silicones, gas sealants and foils finish the job. High temperature and fire rated grades exist for hot or fire-separating joints. Therefore, choose the grade by temperature and fire needs.
Further reading
- Polyurethane (Wikipedia)
- Sealants (Wikipedia)
- Spray foam (Wikipedia)
Key terms explained
- PU foam
- Expanding polyurethane foam that cures to fill gaps.
- Isocyanate
- Component B that reacts with polyol to make PU foam.
- Fire rated sealant
- A sealant tested to help hold back fire and smoke at joints.
- Vapour barrier foil
- Aluminium foil that blocks moisture.
Features and benefits
- Expanding foam for gaps.
- Fire rated and high temperature grades.
- Two-part PU components.
- Foils and pearl sheet for reflective layers.
- Gas and leak sealants.
Technical specifications
| Product | PU foam spray |
|---|---|
| Pack | Aerosol can, confirm size |
| Packing | Confirm with quote |
| Supplier | Sparks Plumbing Experts Ltd, Nairobi |
| Supplier | Sparks Plumbing Experts Ltd, Nairobi |
Sizes, grades and ratings depend on stock and model. Tell us what you need, and we will confirm before you order.
Applications of a pu foam spray
- Pipe and duct penetrations. Filling gaps through walls.
- Cold room panels. Sealing joints.
- Door and window frames. Gap filling.
- Fire compartment joints. Fire rated sealant and foam.
- Ovens and flues. High temperature silicone.
- Gas pipe threads. Gas sealant.
- Duct wrap. Aluminium foil.
- Roof underlay. Pearl sheet reflective layer.
- Panel manufacture. Two-part PU systems.
- AC leak repair. Stop leak products.
How to choose and install
- Use fire rated products where walls separate fire zones.
- Check temperature ratings near heat.
- Wear gloves and eye protection with PU foam.
- Follow cure times before load or heat.
Why choose Sparks Plumbing Experts
- Tubes and sheets in many sizesPipe insulation tubes and sheets cover common copper and steel pipe sizes.
- Tapes and finishing materialsInsulation tapes and related materials help you seal joints properly.
- Condensation adviceWe help you choose a wall thickness that keeps cold pipes dry in your conditions.
- Matched to your pipeworkOrder insulation together with the copper pipe it covers.
- Visit or collect in NairobiOur store is at KCB Building, Enterprise Road, in the Industrial Area, so you can see parts before you buy or collect your order.
- Quotes your wayAsk for prices by phone, WhatsApp, email or the online quote form, whichever suits you on site.
- Over 1,600 products in one placeOur catalogue covers 55 categories, so one supplier can handle most of your parts list.
- Help choosing the right partSend a nameplate photo, a drawing or the old part, and we help you match size and specification.
- Single items or project quantitiesWe price a single replacement part just as readily as a full site order.
- Supply across East AfricaWe serve customers across Kenya, and we also supply buyers in Uganda and Tanzania.
Related products and accessories
Browse more: Insulation · Tapes · HVAC.
Ordering from Sparks Plumbing Experts
We supply customers across Kenya, and we also serve buyers in Uganda and Tanzania. You can collect from our store at KCB Building, Enterprise Road, Nairobi, or ask us about delivery to your site. Send your quantities and specifications, and we will reply with prices and availability.
Request a Quote WhatsApp 0726 086 895
Frequently asked questions
What details do you need to quote foams and sealants?
Tell us the product, pack size and quantity. A photo of the old part, a nameplate or a drawing also helps. Then call or WhatsApp 0726 086 895, or use the quote form on this page.
Do you deliver foams and sealants outside Nairobi?
Yes. We supply customers across Kenya, and we also serve buyers in Uganda and Tanzania. Delivery or courier arrangements are agreed when you confirm the order.
How much does a foam or sealant cost in Kenya?
The price depends on the item, size or model and the quantity. Therefore, send your list with a quote request and we will reply with current figures.
Can PU foam be used outdoors?
Cover cured foam from sunlight with paint or sealant.
Is PU foam fire rated?
Only fire rated grades. Check the label.
How long does foam take to cure?
Follow the can label; humidity speeds curing.
Can silicone go on hot surfaces?
Use high temperature silicone within its rating.
What is isocyanate used for?
It reacts with polyol to make PU foam for panels and insulation.
People also search for
fire rated vs normal pu foam
Fire rated foam is tested for fire stopping; normal foam is not.
high temperature silicone uses
Ovens, flues and hot equipment seals.
polyol and isocyanate mix
Mix in the ratio the maker gives.
pearl sheet insulation
A light reflective sheet for roofs and ducts.
gas thread sealant
Use a sealant approved for gas.
Foams and sealants price in Kenya
Prices change with size, model and quantity. Request a quote from Sparks Plumbing Experts for current figures.
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