Bungalow Attic Insulation

heffo500

Hi

I live in a very old bungalow circa. 1800. The attic is filled with rubble between the ceiling joists which we are currently cleaning out.

I plan to put 100 mm of Earthwool Loft Insulation between the joists and 200mm in the opposite direction this weekend.

Would the house be warmer straight away or will it just reduce the heating costs?

Thanks

Gumbo

It’s not going to be a wow factor impact. You should notice the ground floor retaining heat for longer if you’ve installed it correctly and paid attention to the air tightness provisions.

Have you any plans to convert the attic space? As that may change how you insulate now.

heffo500

No plans to convert the attic, some of the joists in the oldest part are only 2*2 so don't think we will ever have anything heavy up there.

heffo500

I'm planning to put this down for a walkway also.

Xtratherm Loft Walk Board 1.2 x 0.6mtr x 86mm

https://www.goodwins.ie/products/Xtratherm-Loft-Walk-Board-1.2-x-0.6mtr-x-86mm.html?filter_set[]=1413,2188

Calahonda52

Couple of things you need to consider:

• assuming the rubble had no insulation effect, 300mm will reduce the temp in the attic space so you will run the risk of condensation unless you ventilate the roof space.
• If you ventilate at eave level you will need to stop the wind passing through the insulation.
• If you have a cold water tank and pipes, you will need to cover the tank and insulate it and the pipes
• if you have power cables to sockets/immersions/cookers etc, they cannot be covered but can be sleeved as they are designed for air cooling

heffo500

What should I use to stop the wind passing through the insulation? The cold tank is in another attic so not an issue.

The cables in the attic are only lighting circuits so low draw on current so not concerned about them.

Outkast_IRE

Consider putting in some loft legs and some OSB loft boards on top for storage, relatively easy to do and will still allow you to roll your insulation underneath.

The old style attic hatches can lose alot of heat , as they usually dont have a draft strip around the edge and are uninsulated. So have a think about adding a draft strip and insulating the hatch.

heffo500

Outkast_IRE wrote: »

Consider putting in some loft legs and some OSB loft boards on top for storage, relatively easy to do and will still allow you to roll your insulation underneath.

The old-style attic hatches can lose a lot of heat, as they usually don't have a draft strip around the edge and are uninsulated. So have a think about adding a draft strip and insulating the hatch.

Due to the age of this part of the property, some of the joists are only 2*2 so I wouldn't store anything on those. In the new part of the house where I will top up the 4 inches of insulation, I will do that

greasepalm

Outkast_IRE wrote: »

Consider putting in some loft legs and some OSB loft boards on top for storage, relatively easy to do and will still allow you to roll your insulation underneath.

The old style attic hatches can lose alot of heat , as they usually dont have a draft strip around the edge and are uninsulated. So have a think about adding a draft strip and insulating the hatch.

What do people use on their hatch as i know top of house is cold.

heffo500

greasepalm wrote: »

What do people use on their hatch as i know top of house is cold.

My plan for the loft hatch was to cut 100mm kingspan the size of the hatch board and bond it to the board.

Then I was going to use draft seals around the edge where the board rests on the frame.

Outkast_IRE

greasepalm wrote: »

What do people use on their hatch as i know top of house is cold.

In my own case i used a very simple method. Self Adhesive Closed Cell Insulation (Armaflex or similar) available off amazon - sold on the basis of acoustics usually but the thermal properties are very good you can layer it if you so desired but i found a single layer made a noticeable difference.

Something like this.

[HTML]https://www.amazon.co.uk/dp/B07TKXMPH7/ref=sspa_dk_detail_0?psc=1&pd_rd_i=B07TKXMPH7&pd_rd_w=RUmLC&pf_rd_p=e2900fd7-b5de-4e19-8de9-cc3d3392d099&pd_rd_wg=VCrPj&pf_rd_r=RF29S988N3M3HK061V4R&pd_rd_r=8068c3f8-7e5c-44af-bed2-ba8492d6021c&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUFZRTFLN0kwRUFHTE0mZW5jcnlwdGVkSWQ9QTA4MzcyMjZXVlMxMVM0UUxFWVMmZW5jcnlwdGVkQWRJZD1BMDgxMDIzNTM1RTMwWUNIQTA5NDkmd2lkZ2V0TmFtZT1zcF9kZXRhaWwmYWN0aW9uPWNsaWNrUmVkaXJlY3QmZG9Ob3RMb2dDbGljaz10cnVl[/HTML]