Roof Insulation Andover

Heat rises, and up to 35% of a home’s warmth can escape through an under-insulated roof. That matters across Andover, where most of the housing dates from the post-1960 overspill expansion — the 1960s estates around Floral Way and Cricketers Way and the 2000s developments at Augusta Park and Picket Twenty — and roofline insulation there often predates current standards. The town’s exposed setting on the chalk downland at the edge of Salisbury Plain brings real seasonal swings, so a roof brought up to today’s standards trims roughly £200 to £400 a year off heating bills.

Knauf Earthwool is a mineral wool product we fit between and over the rafters to a depth of 300mm — comfortably beyond the 270mm government minimum — to target a 0.16 W/m²K U-value. It is non-combustible, delivers strong thermal and acoustic performance, and lasts for decades. For the standard pitched-roof terraces and semis that make up well over half of Andover’s stock, Earthwool is usually the most cost-effective choice, priced between £900 and £1,200.

Where rafter depth is limited, or you want to keep the loft usable for storage or a future conversion, Superfoil multifoil reaches comparable performance in a much slimmer profile. Fitted between the rafters, it works as a radiant barrier as well as an insulant — which suits the room-in-roof conversions becoming common on Andover’s newer estates at Augusta Park and Saxon Fields. Superfoil is typically priced between £1,200 and £1,800 installed.

Roof insulation in Andover must meet Part L of the Building Regulations, which sets the minimum thermal standard. We install to a 0.16 W/m²K U-value and handle the full building-control notification for you, so there is nothing to arrange yourself. On cold-roof installations we fit 25mm eaves ventilation as standard to keep air moving and prevent condensation building up in the roof space. Evidence of compliance also matters when you come to sell.

Both Knauf Earthwool and Superfoil carry manufacturer warranties, and our installation work is covered for 10 to 25 years depending on the product. Properly fitted roof insulation holds its performance for decades with no ongoing maintenance, so the savings — around £200 to £400 a year for an Andover home — keep adding up long after the work is done. Every job starts with a free, no-obligation survey and a fixed-price quote, with no high-pressure sales or jargon.