small roof hole repair

[turnpike]

Hi,

I've just roofed my attached garage with onduline (bitmumen corrugated sheets) but one of the nails bent half way and created a hole about 10 mm across.

Do I repair this the same way I would felt, with some mastic and maybe repair tape?

Cheers!
Carl

 

[DAZB]

Yes either a good quality external brand or Roof & Gutter seal would do.

 

[turnpike]

Thanks, will try sealant, though the sheets are on decking so not easy to get under. Might have to push something through the hole first so the sealant has support.

 

[ladylola]

If you have any offcuts you could always glue a patch over the hole with felt adhesive.
I have roofed a couple of sheds with this type of material and used screws with large penny washers.
Just as another point the supplier I got my sheets from had onduline and coroline which are pretty much the same but made by different firms. It all looks the same but there is a slight difference in profile , the two don't fit together perfectly.