prime/seal cut tarmac edge before laying cold tarmac repair?

D

Draughtsman

Joined
30 Mar 2012
Messages
670
Reaction score
4
Location
Monmouthshire
Country
United Kingdom
Would a bituminous roofing felt adhesive be suitable for priming a (cut) tarmac edge, before laying some cold repair tarmac down adjacent to it? It has to be a better job if a primer or edge sealant is used but the spray-on stuff is quite pricey.

I was thinking of using something like Cementone Feltfix?

Thank you,

Dain
 
TBH I don't think it's worth the effort, not sure a primer will add much to a cold tar repair.
 
Those bags of patch repair look like they would be ok if not driven over, in a corner etc.

Would a tin of bituminous roofing felt adhesive not be suitable for bonding new tarmac to old along a cut edge?
 
Sry, I haven't been very clear, but I was thinking more about having it act as an edge sealant to prevent water ingress along the joint between old and new?

I'm not kitted out for cooking up bitumen block and I wouldn't know where I could find a small piece anyway, it seems to come in large quantities.
 
I can't see how this would be an issue. If the joint is clean and the new tarmac well compacted then thats enough.You dont see any drive way have joints sealed and looking around the public paths, its not done on them either.
 
I use the edge sealer spray, to me it seems a bit watery to make a decent joint but I don’t pay for it so I use it every time. The tubbed tarmac is much better than the bags.

5FD12181-86C8-49AF-87D5-1A9E45D3DCEB.jpeg
 
I’ve bought three or four bags of cold tarmac to repair a patch in my drive a while ago. Pretty sure I bought a tin of spray edge sealer too. I remember it was quite expensive for what it was. This post has reminded me that it’s still sitting in my garage so I must get my lazy arse in gear and get it done.
 
Dain1 said:
Sry, I haven't been very clear, but I was thinking more about having it act as an edge sealant to prevent water ingress along the joint between old and new?

I'm not kitted out for cooking up bitumen block and I wouldn't know where I could find a small piece anyway, it seems to come in large quantities.
Click to expand...

If you wanted to you can use overbanding tape. Just needs a blow torch.

It's not really necessary though
 
^woody^ said:
The tarmac sticks to anything without priming.
Click to expand...

Woody,
Bagged tarmac to tie in to edge of existing drive, tidying a 170 wide strip along the outer edge of extension footing, I cleaned out the blockwork and render spillage, and weeds (diyer lets grass grow shock horror) so maybe just run a pressure washer along top of exposed footing too.

What's the min depth of tarmac required?

Does cold tarmac need to be laid in dry conditions?

Can a decent finish be achieved with a 150sq tamper? I see that screwfix's are quite elongated.

Thanks
Dain
 
Dain1 said:
You do see it used on patches and alterations, where can I pick some up? What are the brandd names please?
Click to expand...

You can get it online, or locally, builders merchants/industrial trade counters etc

Dain1 said:
Woody,
Bagged tarmac to tie in to edge of existing drive, tidying a 170 wide strip along the outer edge of extension footing, I cleaned out the blockwork and render spillage, and weeds (diyer lets grass grow shock horror) so maybe just run a pressure washer along top of exposed footing too.

What's the min depth of tarmac required?

Does cold tarmac need to be laid in dry conditions?

Can a decent finish be achieved with a 150sq tamper? I see that screwfix's are quite elongated.
Click to expand...

If it's just along the edge of a building, it's not going to get driven on, so I wouldn't worry about depth. Dry day is best but not life or death.
 
Dain1 said:
Woody,
Bagged tarmac to tie in to edge of existing drive, tidying a 170 wide strip along the outer edge of extension footing, I cleaned out the blockwork and render spillage, and weeds (diyer lets grass grow shock horror) so maybe just run a pressure washer along top of exposed footing too.

What's the min depth of tarmac required?

Does cold tarmac need to be laid in dry conditions?

Can a decent finish be achieved with a 150sq tamper? I see that screwfix's are quite elongated.

Thanks
Dain
Click to expand...
Look on the bag for minimum depths, but from experience, I've done it feathered to about 15mm and it's been fine. The main thing is to ensure you compact it well, so it all bonds together.

Yes a 150 tamper will do your strip. What I tend to use is a block of wood (or make an inverted T - like a tamper) and put some polythene on the wood, dampen it and tamp or use a mallet or lump hammer. Warm the bag up if its cold outside, and I've always dried the area first with a torch, but it does not need to be bone dry.
 
You must log in or register to reply here.
Back
Top