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  1. J

    Wiring in a 2 gang dimmer

    Hi I have just purchased a replacement 2 gang dimmer but having removed the old dimmer the wiring does not relate to any info I can find online or in the install guide. The dimmer controls 2 separate lights in the lounge. There are currently 3 cables and an earth. On the left side a blue...
  2. J

    combi boiler pressure rising

    I have done a search on here and have a part answer to my problem but looking for further advice. A few weeks ago I drained the system to replace a few lockshields, no problems there system refilled and no leaks. Then last weekend I noticed that whilst the boiler was running the CH the pressure...
  3. J

    Foil Insulation for underside of flat roof

    Hi Guys, looking for some advice I have a cold roof constructed flat roofed dormer that I need to insulate after ripping down the existing ceiling and finding no insulation present. There is so much choice of insulation available and then there is concern around vapour control. I have...
  4. J

    Changing a radiator with an 8mm feed

    Hi Guys In the kitchen we have 1 double 400x600 convector radiator that does not sufficiently heat up our 20 x 12 kitchen. So I have gone out and bought a 400x1800 designer type that gives off approx 400watts more heat. The convector radiators flow and return are 8mm copper pipe that go up...
  5. J

    Ideal running pressure of Combi CH system

    We have ferroli modena combi system which the manual says should have a pressure of 1 bar whilst off. This is ok and the system keeps this pressure for months, so no leaks etc. However when the system is up and running the pressure barely moves, maybe it will reach 1.5 bar but no more than...
  6. J

    Airbrick into cavity

    Looking for a bit of advice, this will probably cover a number of different forums but feel the building forum most appropriate. We live in a fairly large extended 4 bed semi detached property which has a total of 12 airbricks which go into the cavity and not into the rooms. Now this time of...
  7. J

    Radiators red hot but give off little heat

    I am not an expert on central heating systems so looking for some advice as to what to do next. I bought a property approx 2 years ago with a 4 year old combi boiler fitted in the attic, the boiler works well heating all 12 radiators in the property with no problem at all, I think the boiler is...
  8. J

    Single skinned cloakroom

    Hi all, We have a downstairs cloakroom (Extension) off the kitchen which is single skinned brick, tiled on the inside with a rendered exterior. This time of year it gets really cold in there and now the rest of the property has had cavity wall insulation installed I am noticing condensation...
  9. J

    Condensation behind cavity air brick

    All Last year we got cavity wall insulation (bonded bead) installed. No problems at first, but now on the inside of the bedroom wall (external wall) top corner I have started to notice condensation gathering. I have read up on condensation and now open our trickle vents and dry 80% less of...
  10. J

    Condensation in loft space since cavity wall insulation

    Guys I had cavity wall insulation (bonded bead) fitted October 2007, within a month of the install my boarded attic space was filled with polystyrene insulation which had blown out of the cavity into the loft space. Thought nothing more of it, cleaned it up and left it. Having not spent...
  11. J

    Heavy textured external paint

    I have been painting a textured wall coating on the exterior of my property but certain areas have been damaged. I was wondering if there is a paint on the market that is heavily textured that could be applied to cover up the damaged wall coating. I have been to my local DIY centre and all...
  12. J

    Can waterproof PVA been covered with paint

    Hi all I know this is more towards decorating but you guys deal with this PVA stuff everyday so must of come across this I have been removing an existing wall coating from the outside of my property and now want to secure / seal certain areas before I apply the paint. What PVA would be...
  13. J

    Water proof or normal PVA to seal / secure outside wall

    Hi all I have been removing an existing wall coating from the outside of my property and now want to secure / seal certain areas before I apply the paint. What PVA would be best, waterproof or normal, it is an external paint job so water proof would seem the obvious choice but seems that I...
  14. J

    Wiring of a Honeywell wireless cmt921 thermostat

    I have just bought this honeywell RF stat and looking through the installation manual I cannot understand the wiring arrangement for the receiver, I am going to use 2x 2 core heat flex cable (1 for the voltage free switch and the other for L&N). Anyone installed these willing to share the...
  15. J

    Installation of honeywell CMT921 RF thermostat

    I have just bought this honeywell RF stat and looking through the installation manual I cannot understand the wiring arrangement for the receiver, I am going to use 2x 2 core heat flex cable (1 for the voltage free switch and the other for L&N). Anyone installed these willing to share the...
  16. J

    Replacing room thermostat

    I have an old sunvic mechanical room thermostat that was disconnected when the new combi boiler was installed in the loft. I now want to connect a new honeywell digital CM901 programmable thermostat in the hallway to replace the old disconnected sunvic. There are 3 wires going to the...
  17. J

    Adding a Honeywell CM67RF to a ferroli modena 102

    Hi all, I currently have no room thermostat attached to my ferroli combi boiler, out of 11 rads there are 8 that have TRVs fitted. Firstly are the wireless devices reliable? I have the Ferroli manual and the Honeywell installation manual, its seems fairly straight forward fitting the...
  18. J

    Why so many air bricks

    I have recently purchased a 1960s semi detached property which has a total of 11 cavity air bricks. 3 at the front (1 below bay window and 2 level with first floor windows), 5 on the side (3 at just above ground level and 2 just above first floor windows) and finally 3 at the rear (1 below...
  19. J

    Painting over wall coating

    I have a wall coating (Sprayed on type) around 15 year old that is starting to flake and peel in certain areas where the wind hits the property the hardest. I am going to paint over the coating but firstly remove all the flaking and peeling bits. Various people I speak to say I need to seal...
  20. J

    Draft under the upstairs floor boards

    I have recently purchased a 1960s semi and was changing the downstairs light fittings when I felt a draft coming through the ceiling, connected the light fitting and thought no more of it. No the colder weather is settling in I have found that in the airing cupboard upstairs that has no carpets...
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