Cavity wall insulation removal in Market Deeping

A cavity wall keeps the weather out by leaving a gap between two skins of masonry. Rain soaks the outer skin and the gap stops it going any further. Fill that gap with insulation that has got wet or slumped, and it becomes a bridge that carries the damp straight through to the inside wall.

Which Deepings houses it affects

The old stone buildings around the market place and along the river are mostly solid-walled, so cavity fill is rarely their problem. It is the cavity-walled houses on the estates that grew up around Market Deeping and Deeping St James that were filled during the insulation schemes of recent decades, and those are where failed fill shows up. It often comes to light when a house is sold and the buyer's survey asks why the walls are damp.

The signs to look for

• Damp patches on outside walls that come back after every repaint
• Cold spots and mould in corners and behind furniture
• Damp that is worst on the wall facing the weather
• A survey on a sale flagging high damp readings with no obvious cause

Not every damp wall is the fill. A gutter overflowing down the brickwork, which the tree cover here makes common, can look much the same from indoors, so we look at both before saying which it is. Clearing a gutter is a far smaller job than emptying a wall, and you deserve to know which one you actually need.

How the fill comes out

We drill out and extract the material until the cavity is clear, photograph what we find and what we remove, and put both the quote and the finished job in writing. Ring 01778 775043 and we will look at the walls inside and out for free. The price quoted is the price paid, and the work is guaranteed for five or ten years depending on the job.