Services

Damp or mould in the loft? We’ll find where it’s coming from.

Drips on cold mornings, wet felt and black spots on the rafters almost always have a cause you can fix. Book a free loft check and we’ll show you what it is.

  • Free loft check
  • The cause found, not covered up
  • Written quote first
  • No obligation
Check my loftHow it works

Illustration: checking mould on the roof timber

About this service

Loft condensation happens when warm, moist air from the house reaches cold timber and felt and has nowhere to go. We find where the moisture is getting in, stop it, open up the airflow and replace any insulation that’s wet.

What’s included

  • A check of timbers, felt, eaves and anything venting into the loft
  • Photos of what we find and where it’s coming from
  • Mould on timber cleaned and treated
  • Vents added or eaves cleared so air moves through
  • Wet or spoiled insulation replaced
  • Gaps around pipes, cables and the hatch sealed

We price the job after looking at your loft. You get a written quotation before any work is agreed.

What causes it

The usual culprits are a bathroom or kitchen fan blowing into the loft instead of outside, insulation pushed into the eaves so air can’t flow, gaps around the hatch and pipes letting warm air up, and newer felts or boarding that trap moisture. Sometimes it’s a roof leak, which we’ll tell you plainly.

What we do about it

We deal with the source first: duct fans outside, seal the gaps, clear or add ventilation at the eaves and ridge. Then we clean and treat mould on the timber and replace insulation that has got wet. Fixing the cause is what stops it coming back.

Why not just treat the mould?

Wiping mould away without fixing the moisture is a short-term job. Within a winter or two it’s back. We’d rather put it right once.

The process

How it works

  1. Tell us what you’ve noticed

    Pick the problem on the form, add what you’ve seen and your postcode. About a minute.

  2. We look and find the cause

    We check the loft, photograph what we find and explain it in plain words.

  3. A written quote for the fix

    What needs doing, how we’ll do it and the price. No obligation.

  4. Fixed properly

    If you go ahead, we sort the problem first and leave the loft insulated and dry.

Loft condensation and mould: your questions answered

Is mould in the loft serious?
It’s a sign that moisture is building up. Left alone it can rot timber and spoil insulation, so it’s worth finding the cause.
What if it’s a roof leak?
We’ll tell you and suggest you get the roof repaired before the loft is re-insulated.
Will more ventilation make the house colder?
No. The air moves through the roof space above the insulation, not through your rooms.
Do you deal with damp walls inside the house?
No, we work in the loft. If we see signs of a wider problem, we’ll mention it.
Is the work guaranteed?
Eligible installations come with a guarantee of up to 5 years. Your written quote says whether your job qualifies and what it covers.

Related

Where we work

Tell us what you’ve found. We’ll find the cause.

Describe the problem and we’ll look, explain it and quote the fix in writing. Free.

Check my loft
Check my loft