New build mould - would a snagger spot this?

[-]

ci_newman@reddit

Moisture in an actual new-build property is normal (i.e. you are the first occupiers). Our builders specifically warned us about this when we moved in and told us to continue airing the property thoroughly for a long while after moving in.

Fresh plastering, fresh paint, pouring floors - these all add a LOT of moisture to the underlying fabric of a newly built property and it takes a long time for things to dry out.

You need to monitor it with a hydrometer and open the windows / use a dehumidifier as needed. We were fortunate that we moved in during the summer and could keep windows and doors open, we've lived here 3.5 years now and don't get issues with mould or condensation and humidity is rarely above 50% indoors (and no longer need a dehumidifer etc).

[-]

khime@reddit

To me this mould doesn't look like rising damp. It looks like where condensation is collecting. We had the same issue of mold forming behind the wardrobes, furniture and the seals of the windows.

My question is are your windows full of condensation in the morning? If so then your house air moisture level is too high and you need a dehumidifier on.

Get yourself a hygrometer to see what the relative humidity is. Anything over 60% when it's cold outside means condensation can form.

We got a meaco dehumidifier and now we don't get any condensation or mold forming.

[-]

TheRollingAcorn@reddit (OP)

I couldn’t figure out where it was coming from. We had to throw some furniture out, sell up and move on. I’d say we had a normal amount of condensation, hard to say on the windows in the mornings because we kept them closed. I kept a few disposable dehumidifiers in areas where moisture would gather, where I dried clothes etc but it just kept coming back. I suppose modern homes keep moisture contained better than older homes. We have a 1930s home now, don’t seem to have the same issues.

I’ll keep the dehumidifier in mind if we do decide to buy new again so thanks for bringing it up

[-]

frodoisdead@reddit

If you want to get rid of condensation in the future, you really need a Positive Input Ventilation (PIV) unit in your loft. It constantly pumps air through your house and prevents condensation building up. We had really bad condensation in a 1920s house, got a PIV and our condensation woes ended within hours.

[-]

distractedsparky64@reddit

Do these come as a heat exchanger unit? Or just an extraction fan but in reverse?

[-]

shawerma_sauce@reddit

A good snagger would, he would use a thermal camera to spot any cold or damp spots in walls and floors.

This is more common than you think with new builds, quality is so shit to save many and time.

Better buy a well-built house than a dodgy new build imo.

[-]

AutoModerator@reddit

Please help keep AskUK welcoming!

Top-level comments to the OP must contain genuine efforts to answer the question. No jokes, judgements, etc.
Don't be a dick to each other. If getting heated, just block and move on.
This is a strictly no-politics subreddit!

Please help us by reporting comments that break these rules.

I am a bot, and this action was performed automatically. Please contact the moderators of this subreddit if you have any questions or concerns.