Loft Insulation Advice

[collinsc]

Hi

I would appreciate some advice on loft insulation. I moved into my property about 4 months ago. It is a first floor 2bed flat, built in the 70s.

The insulation is virtually non existent. I had a company come round the other day to ask for advice (as part of the government initiative) - though i intend to do it myself - i was just getting their expertise.

The requirements are:
56Metre squared.
250mm to be fitted.
150 between the joists and then 100mm across the joints.
Distance between joists is 570MM

My questions are:
1. How many rolls will i need? I notice focus are doing a 3 for 1 deal at the moment.

2. There is currently no ventilation up there. The guys suggested having some "tile vents" or "suffit vents" fitted. Is this definitely needed? Which would be best? How much would it cost?

3. I asked about boarding given that the suggestion was to layer across the joists. He said that it might be possible but that would push the insulation down - and make it less efficient. Opinions?

For interest - the quote was £198.

Thanks very much!

 

[Chukka63]

diff ering thickness insulation will ahve varying metreage in them,check with your local builers merchants.

yes its advisable to increase your ventilation when increasing your insulation

tile vents,again ask your local builders merchant,they will need to know what tiles you have,some have the names stamped in the back of the tile

you simple remove a tile,cut a hole in the felt and pop the new tile vent in place

soffitt vents ,you simply drill a 75mm hole in the soffitt(might be asbestos,depending on age of property,then you just screw/pop the vent in the hole,simple

boarding,it may squash the insulation down but then youre adding another layer so that may add a minimal amount of insulation so i wouldnt worry about boarding it out myself..

sorry its a bit vague on prices but all merchants prices vary as do tiles etc

 

[collinsc]

thanks for the response.