Eliminate condensation, control ammonia, reduce heating costs — permanently
Poorly insulated pig sheds create a cascade of problems — from condensation dripping onto livestock, to excessive ammonia build-up, to rising heating bills and compromised BRC food safety compliance.
Piglets need 30°C in farrowing crates. Sows perform best at 18–20°C. Proper insulation maintains these zones without excessive heating spend.
Closed-cell spray foam raises metal roof surface temperatures above dew point — permanently eliminating the dripping that causes respiratory disease and soiled bedding.
BRC, Red Tractor and RSPCA Assured schemes all require appropriate environmental controls. Our independently tested system satisfies auditor requirements.
Open-cell spray foam absorbs moisture and ammonia — the last thing you want in a pig shed environment. Nexseal LE closed-cell spray foam is the only sensible choice:
λ = 0.027 W/m·K — the highest-performing spray foam insulation available in the UK.

Every zone of a pig unit can benefit from targeted spray foam insulation:
| Zone | Common Problem | Recommended System | Typical Thickness |
|---|---|---|---|
| Corrugated roof sheets | Condensation drip, cold bridges | Nexseal LE closed-cell | 50–75mm |
| Roof purlins / rafters | Thermal bridging | Nexseal LE closed-cell | 25–50mm |
| Gable end walls | Cold penetration, draughts | Nexseal LE closed-cell | 50mm |
| Block / brick walls | Cold damp walls, condensation | Nexseal LE internal | 25–50mm |
| Farrowing house ceiling | Heat loss from piglet zones | Nexseal LE closed-cell | 75–100mm |
Installation note: Pigs can return to the unit within 24 hours of closed-cell spray foam application. Our teams work in sections to minimise disruption to production cycles.
Yes — once cured (typically 24 hours), closed-cell spray foam is inert and non-toxic. Nexseal LE has been used in thousands of livestock buildings across Ireland and Northern Ireland. Animals can return to treated areas the following day.
Closed-cell spray foam has excellent chemical resistance to ammonia and other livestock gases. Open-cell foam is not suitable for pig units as it can absorb moisture and odours.
Closed-cell spray foam for pig sheds typically costs £10–£18/m² installed, depending on thickness and access. Full-building treatment of a 40m × 20m unit would be £8,000–£14,400 typically. We provide fixed-price surveys.
In most cases, no — internal insulation of an existing agricultural building does not require planning permission. Some areas (AONB, listed buildings) may have restrictions. We can advise at survey.
Yes — we plan installation in sections to avoid disrupting farrowing, weaning or finishing phases. We work closely with farm managers to schedule around the production calendar.
Fixed-price quote within 48 hours. No obligation.
Talk to an expert — same day when possible.
Tell us about your building and we’ll recommend the right system — foam, waterproofing or both — surveyed, specified and quoted at no cost.