mandn Posted March 16, 2015 Share Posted March 16, 2015 Hi, We had condensation on our windows on cold mornings. House has double glazing but very exposed Looking to the north. I installed Drimaster Heat which as solved my issues for 99% of the time. No more wet windows, to be honest it wasn't that bad but I hated seeing 1 inch of moisture on the windows on very cold days. I installed in my loft over the landing and took 3 hours max. I am no DIY expert but easy to do and wire into fuse spur in loft. I got heater model but never wired heating element in as used a lot of electricity. A little cooler on the landing but no real issue to be honest. I took a punt at £300 and paid off but may be worth getting some expert advice for free before spending money. This may help your issue.... This You Tube video help me do it myself Mike Link to comment Share on other sites More sharing options...
FORE Posted March 16, 2015 Share Posted March 16, 2015 M&n Can you add the youtube link please? Link to comment Share on other sites More sharing options...
GerryBooth Posted March 16, 2015 Share Posted March 16, 2015 You do not need Rentokill to fit an Envirovent ventilation unit. Google Envirovent they are a Yorkshire based company. Great unit using only 4 watts of power and a 5 year warranty. After 5 years replace the 4 watt motor and filter and they warrant that too. You can diy it or they will fit it for subject to a survey. The survey was £75 but that was in 2010. These units are great for landlords who's tenants will not open a window. Typical of hmo's and Student lets. They guarantee no black mould and the more sealed up the house the better they work. Built in pollen filter too. Cost in 2010 was £450 + vat diy or £650 + vat fitted + survey. Well worth for landlords. Stops the tenants giving you an ear ache. Link to comment Share on other sites More sharing options...
mandn Posted March 16, 2015 Share Posted March 16, 2015 Fore, Google How to install a PIV unit - DIY - Positive Input Ventilation See a YouTube video from fixmyroof. Sounds similar to last reply as only uses a few watts. Mike Link to comment Share on other sites More sharing options...
FORE Posted March 16, 2015 Share Posted March 16, 2015 Thanks M&N. yes Gerry, ventilation can be a problem in HMOs. Link to comment Share on other sites More sharing options...
simonj Posted March 16, 2015 Share Posted March 16, 2015 Is there any link between having cavity wall insulation done and black mould then starting to appear? I only ask because I had it offered for free, together with loft insulation (government funded), about 3 years ago and ever since it was done black mould has been a constant pain on the upstairs walls and ceilings, especially around our bedroom window. Never had a problem in the previous 18 years we've lived here Link to comment Share on other sites More sharing options...
pexseven Posted March 17, 2015 Share Posted March 17, 2015 Is there any link between having cavity wall insulation done and black mould then starting to appear? I only ask because I had it offered for free, together with loft insulation (government funded), about 3 years ago and ever since it was done black mould has been a constant pain on the upstairs walls and ceilings, especially around our bedroom window. Never had a problem in the previous 18 years we've lived here Thanks for all the advice and Recommendations, and i think that Simon,s issue might well be the cause of the problem at my daughters house Cavity wall insulation has been in a few years now, and i don't know if it's regular practice but even the Air vents around the house have been filled in by whoever did it at the time Loft insulation was also done and they put loads of Layers of the insulation in, and it's about 4 feet thick in parts of the loft Link to comment Share on other sites More sharing options...
smithy266 Posted March 17, 2015 Share Posted March 17, 2015 Years ago, houses were not double glazed, the doors didn't seal, we didn't have fitted carpets, so there was a lot of air circulating around. These days, the opposite. Many new builds have PIV fitted as standard, and do not, I believe, suffer from condensation and damp. Like I said earlier, our 1960's bungalow has been transformed by having PIV installed. Link to comment Share on other sites More sharing options...
spider1 Posted March 17, 2015 Share Posted March 17, 2015 Loft insulation was also done and they put loads of Layers of the insulation in, and it's about 4 feet thick in parts of the loft. :hihi: This has got to be some kind of world record. Aso 50 mm cavitys should never be filled with insulation. You never had problems before cavitys were filled . probably water getting across cavity due tie irons running backwards and encouraging water to bridge cavity .Get installers back . Link to comment Share on other sites More sharing options...
GerryBooth Posted March 17, 2015 Share Posted March 17, 2015 Regarding mould after cavity insulation? Not seen it on the inside but on the new extensions with 100mm cavity insulation, I am noticing Algae growing more on the North and East side of homes than before. I am putting this down to the walls not suffering from heat loss so the walls are remaining damp for longer promoting algae growth. Link to comment Share on other sites More sharing options...
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