air bricks for lack of ventilation and cost

Installing air bricks is considered quite a fiddly and undesirable job hence the seemingly high quotes you’ve received. Have you considered adding vents instead as these are much easier to fit. Simply core drill a hole in the wall and install the vent. Much simpler and less time consuming. Obviously the materials cost more but you would definitely see an overall cost saving.

Hi. while I'm not qualified to advise on the airbrick problem, I can suggest getting an itemised materials list from your builder as part of the quote, then you can see where your money is going. As to the damp mould in your fitted wardrobe ( I bet it's on an exterior wall!) Simple water traps regularly changed will help, as will treating the mould with an antifungal spray- ronseal do a good one. This will kill the mould spores and leave a residue to inhibit further growth. Bleach wont work- it doesn't destroy the spores, and nobody wants a bleachy wardrobe! Also, if there's wallpaper in there, take it off- it holds damp and gives a lovely home for fungal growth Increased airflow will also help after treatment- leave internal doors open and up the central heating a bit if possible.

Condensation in property’s is very common these days, trickal vents are a good start, extractors fitted in bathroom and kitchen, keep doors on these rooms closed after and during showering, cooking etc and open the windows slightly during or after for 5 mins to ventilate. Avoid drying cloths and towels over radiators etc, if theres condensation on inside windows dry them off, you can clean the black spors off with warm water and bleach mixture. Or buy expensive solutions that will do the same job, the installation of double glazing, combo boilers, lots of hot water on tap, more people living in flats together is the cause basically. Warm moist air, hits cold walls windows = condensation simple. You don’t need air bricks. Also stand large furniture, beds, wardrobes an inch or so off walls to allow air to circulate. I know Sounds to simple, but it will work