Best type of roof sheets?

steveR

Member

Mixed Farmer

Location

Gods own County, Shropshire of course

• Nov 1, 2023

• #1

I have a car port with a very shallow pitch, and the fibre cement is not in good condition now and needs replacing.

I want to put a single length 15ft coloured roof sheets on, probably tin, but what is the best cost effective product to avoid condensation? Will be including one length of clear sheet for better light underneath.

 

R

robs1

Member

• Nov 1, 2023

• #2

steveR said:

I have a car port with a very shallow pitch, and the fibre cement is not in good condition now and needs replacing.

I want to put a single length 15ft coloured roof sheets on, probably tin, but what is the best cost effective product to avoid condensation? Will be including one length of clear sheet for better light underneath.

Click to expand...

One of my customers has used the tin with the anti drip material on it very happy so far after four years

 

onesiedale

Member

Horticulture

Location

Derbys/Bucks.

• Nov 1, 2023

• #3

or rather than using sheets with anti-con, go the next step and have insulated sheets. cost may not be too far adrift.
MCS at Leek.

Home - MCS Roofing & Cladding Supplies

MCS Roofing & Cladding Supplies

www.mcsroofing.co.uk

 

L

Lakesdigger

Member

• Nov 1, 2023

• #4

robs1 said:

One of my customers has used the tin with the anti drip material on it very happy so far after four years

Click to expand...

Not sure if the anti condensation coating works if too flat mind.

 

steveR

Member

Mixed Farmer

Location

Gods own County, Shropshire of course

• Nov 1, 2023

• #5

onesiedale said:

or rather than using sheets with anti-con, go the next step and have insulated sheets. cost may not be too far adrift.
MCS at Leek.

Home - MCS Roofing & Cladding Supplies

MCS Roofing & Cladding Supplies

www.mcsroofing.co.uk

Click to expand...

I did ponder these initially, but they seemed an expensive luxury unde a car port, but brill on a garage.

I'll have a looksee at their site. Thanks.

 

W

Woody j

Member

Arable Farmer

• Nov 1, 2023

• #6

steveR said:

I have a car port with a very shallow pitch, and the fibre cement is not in good condition now and needs replacing.

I want to put a single length 15ft coloured roof sheets on, probably tin, but what is the best cost effective product to avoid condensation? Will be including one length of clear sheet for better light underneath.

Click to expand...

U will get condensation of the clear sheet if not insulated

 

David.

Member

Mixed Farmer

Location

J11 M40

• Nov 1, 2023

• #7

This^
I have some 10ft sheets in a f/c roof and they drip horrendously at the mid purlin on a frosty morning. 5fts much less so.

 

D

designanddetail

Member

• Nov 2, 2023

• #8

You could do a built up system, single skin tin, rockwool then tin on top. Equal to a composite roof but cheaper if you can do the labour. If you don't want condensation best to avoid a rooflight if possible.

 

Tinman Steels Ltd

Member

Location

Unit 12, Bourne Brook Farm, Tamworth, B78 3DX

• Nov 2, 2023

• #9

As @designanddetail mentioned, a built up system is the better way to go without the grp. Drip-Stop backed sheeting is really designed for a roof pitch 10° or over.

With a built up system you would be able to do a 100mm build for the price of a 40mm panel.

 

steveR

Member

Mixed Farmer

Location

Gods own County, Shropshire of course

• Nov 2, 2023

• #10

designanddetail said:

You could do a built up system, single skin tin, rockwool then tin on top. Equal to a composite roof but cheaper if you can do the labour. If you don't want condensation best to avoid a rooflight if possible.

Click to expand...

As it's an open car port, a built up system (I have one in a house i built in early 90s) is a bit OTT...

90% of the time, a bit of condensation would not be an issue, but when its a problem, it's a problem.

 

D

designanddetail

Member

• Nov 5, 2023

• #11

Oh ok haha, yes insulating an open carport is a bit OTT. Anti-con on the underside of the time ma be ok then as its primary use is to hold the moisture in then it gets dried by airflow, but most people seal in the eaves and ridge and wonder why it does work, but sould like you will have plenty of airflow?

 

C

crashbox

Member

Livestock Farmer

• Nov 5, 2023

• #12

Lakesdigger said:

Not sure if the anti condensation coating works if too flat mind.

Click to expand...

Yes, it works reasonably well

 

steveR

Member

Mixed Farmer

Location

Gods own County, Shropshire of course

• Nov 5, 2023

• #13

designanddetail said:

Oh ok haha, yes insulating an open carport is a bit OTT. Anti-con on the underside of the time ma be ok then as its primary use is to hold the moisture in then it gets dried by airflow, but most people seal in the eaves and ridge and wonder why it does work, but sould like you will have plenty of airflow?

Click to expand...

Airflow will not be lacking for sure

 

D

Dragon

Member

Location

Cornwall

• Nov 5, 2023

• #14

steveR said:

I did ponder these initially, but they seemed an expensive luxury unde a car port, but brill on a garage.

I'll have a looksee at their site. Thanks.

Click to expand...

Could the car port be turned into a garage at a later date, so the insulated panel could be worth it.

 

S

spanners and hammers

Member

Location

cambridgeshire

• Nov 5, 2023

• #15

i did a store shed by running out tyvec type membrane first then put the steel roof sheets on top that has stopped the drips and was not much money