Spray Foam Insulation
High-performance solution for superior thermal efficiency, airtightness, and long-term comfort
Spray foam insulation is a high-performance solution for lofts, roofs, walls, and floors that delivers superior thermal efficiency, airtightness, and long-term comfort. At Loft Insulation Services UK, our spray foam insulation service offers professional installation, precise application, and lasting results — ideal for new builds, loft conversions, renovations, or energy‑efficiency upgrades.
If you want maximum insulation performance, airtightness, and reduced heat loss — spray foam can significantly outperform traditional insulation types like rolls, batts, or loose‑fill, making it a smart long-term investment for your home or building.
Why Choose Spray Foam Insulation
Spray foam insulation offers several advantages that make it particularly suitable for lofts, roofs, and more ambitious insulation projects:
Superior thermal performance & airtightness
Spray foam expands and fills gaps, cracks, and irregular spaces — creating a continuous thermal barrier that significantly reduces heat transfer and prevents cold air ingress or heat loss.
Excellent for irregular or hard-to-reach spaces
Because spray foam expands and conforms to surfaces, it's especially effective where there are rafters, angled roofs, sloping ceilings, or awkward joist layouts.
Moisture and condensation resistance
Closed-cell spray foam — when applied correctly — can act as a vapour barrier, preventing moisture ingress, reducing risk of damp, and protecting roof timbers or building structure.
Air‑seal and draft reduction
Spray foam effectively seals drafts, air leaks around windows, hatches, water tanks, pipes, and penetrations — improving overall insulation efficiency.
Long-term durability and longevity
Once cured, spray foam is stable, does not settle like loose-fill, and maintains its insulation and sealing properties for many decades.
Enhanced energy efficiency & comfort
Homes insulated with spray foam tend to retain heat better in winter, stay cooler in summer, and deliver more consistent indoor temperatures, reducing energy bills and improving comfort.
Because of these benefits, spray foam insulation is an excellent choice where premium performance, airtightness, and long-term energy savings are priorities.
Our Spray Foam Insulation Service
We provide a full-service spray foam insulation installation — from assessment and planning to application, finishing, and after‑care. Here's what you can expect when you choose our service:
1. Comprehensive Property & Roof/Rafter Assessment
- Inspect the area (loft, roof, attic, walls, floor) — checking structure, rafter/joist layout, roof pitch, existing insulation, ventilation, water tanks, wiring, accesses, and any obstructions.
- Evaluate whether spray foam is suitable (roof structure, ventilation requirements, moisture risk), and recommend the right spray foam type (open-cell or closed-cell) based on intended use (storage or habitation).
- Check for existing insulation or damp issues — if needed, plan for removal and preparation before spray foam installation.
2. Preparation & Safety Measures
- Clear the loft or roof space of debris, old insulation, or stored items to provide a clean area for foam application.
- Seal or protect windows, hatchways, vents, wiring, electrical fixtures, water tanks and plumbing to avoid contamination or damage.
- Ensure access and safety for installers (sturdy flooring or boarding if needed, protective gear, ventilation when spraying, containment of overspray).
3. Professional Application of Spray Foam
- Apply spray foam evenly between rafters, joists, or roof timbers — ensuring full coverage, correct thickness, and penetration into corners, gaps and irregular spaces.
- In lofts or roofs, ensure sufficient foam thickness to deliver recommended thermal resistance (U‑value) and airtightness.
- Address all penetrations — around pipes, vents, cables, chimneys — sealing them thoroughly for airtightness and thermal continuity.
4. Ventilation, Moisture Control & Compliance
- Verify that loft ventilation requirements are met — even with spray foam's airtight qualities, adequate air movement or ventilation must be maintained according to building regulations.
- For roofs intended for habitation (loft conversions), ensure that vapour control and condensation risk are managed appropriately (vapour barriers or controlled ventilation if required).
- Comply with fire, building safety, and insulation regulations for your property type and usage.
5. Final Inspection, Clean-up & Handover
- Inspect foam coverage for consistency, thickness, and absence of voids or thin spots.
- Clean up any overspray, remove protective coverings, and clear waste safely.
- Provide you with documentation of the work done — insulation specifications, thickness, ventilation advice, maintenance guidelines.
- Advise on safe loft access, storage limitations (if any), and future inspections for roof/ventilation/ insulation integrity.
Types of Spray Foam We Use
We recommend and use high-quality spray foam products that meet safety and performance standards, typically choosing between:
Closed‑cell spray foam
Offers high insulation value per thickness, excellent airtightness, moisture resistance, and structural rigidity — especially suitable for roofs, loft conversions, or spaces requiring a vapour barrier.
Open‑cell spray foam
Lightweight and more breathable — sometimes preferred where some degree of breathability is required, or where rigid structural load is not needed (for internal partitions, ceilings, or floor/ceiling between storeys).
Our professional team evaluates your property's needs and recommends the correct foam type — prioritizing thermal efficiency, moisture control, ventilation, and building regulations compliance.
Why Correct Installation Matters (More Than Ever)
Spray foam insulation offers major benefits — but only when installed by trained professionals. Mistakes can reduce effectiveness, lead to damp or ventilation problems, or compromise fire safety. That's why we emphasize:
Proper preparation — cleaning, moisture check, removal of old or damaged materials, safe access.
Ensuring ventilation requirements are maintained or provided — especially for inhabited lofts or roofs with spray foam insulation.
Correct application thickness and coverage — to avoid cold spots, thermal bridging, or heat loss.
Full sealing around penetrations — pipes, cables, chimneys, windows, hatches — to ensure airtightness.
Appropriate fire-safety measures — spray foam materials and installation must meet building fire regulations, and not interfere with fire rated surfaces or escape routes.
Our experienced installers follow all best‑practice guidelines to deliver safe, effective, long-term insulation that protects your home and improves energy efficiency.
Benefits for Homeowners, Landlords & Property Managers
By choosing spray foam insulation through Loft Insulation Services UK, you can expect the following benefits:
For many homeowners or property owners, spray foam is a premium insulation solution that pays off over the long term in comfort, efficiency, and durability.
FAQs — Spray Foam Insulation (Top 5)
1.Is spray foam insulation suitable for my loft or roof?
Yes — especially if your loft or roof has irregular rafters or joists, sloped ceilings, hard‑to‑reach spots, or you want maximum insulation and airtightness. After a site assessment, we'll advise whether spray foam is the right choice for your property.
2.Will spray foam cause ventilation or condensation problems?
Not if installed correctly. We always assess ventilation needs before application and ensure vents/air paths remain or are upgraded. For roof spaces or converted lofts, we make provisions for proper ventilation and vapour control to prevent condensation or damp.
3.What type of spray foam do you use — open-cell or closed-cell?
We typically use closed‑cell spray foam for roofs and lofts because of its superior insulation, moisture resistance, and airtightness. In situations requiring breathability or lighter load — open-cell foam may be recommended. Our survey will determine the right choice.
4.Is spray foam safe and durable long-term?
Yes. When applied correctly by professionals, spray foam insulation remains stable, does not settle or degrade, and preserves insulation performance for decades. It also contributes to airtightness and structural insulation integrity.
5.Can I install spray foam if I plan a loft conversion or intend to use the roof space?
Absolutely. Spray foam is especially ideal for loft conversions, roof rooms, or converted attics — providing a continuous thermal envelope, moisture control, and airtightness. We also ensure ventilation and compliance with building standards.
Ready to Install Spray Foam Insulation?
Get a free, no-obligation quote for professional spray foam insulation installation today.
Experience superior thermal performance and airtightness with our expert spray foam installation service.