Bitumen shingles in colder weather

Had a read through most of the forum and I'm still left with a question please.

Log cabin with roof 12.8 deg pitch & 19mm tongue and groove roof boards.

I have a bitumen underlay to go down onto the boards and my question is with regard to laying the hexagonal bitumen shingle tiles in not so good weather.

I am in Highland Scotland and not only are we not having the warmest time but it is often raining and the unpredictable winds are a pain.

Having never done a roof before I'm guessing that I am not going to be the quickest at laying the shingles.

Given the weather, temp and winds I am concerned that when I fix the shingles with nails they are then relying on warm weather to seal/stick them. I'm not sure how warm it needs to be but I'm guessing this aint warm enough.

Is it worthwhile running over them with a head gun and small roller to give them a head start or will I be asking for trouble?

Of course, any other words of wisdom, apart from get a roofer in (all trades here seem to be like hens teeth as they are all too busy).
Thanks

Hi John
If you are using a torch on underlay as your base layer then yes you can use a heat gun/blow torch to stick them down.

Keep a hose, fire extinguisher and mobile phone handy.

catlad said:

Hi John
If you are using a torch on underlay as your base layer then yes you can use a heat gun/blow torch to stick them down.

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No I won't be using a torch or heat gun on the underlay, just nailed down.
My query is really, would a 'heat gun' help with the bitumen shingles after they are nailed; what stops the wind getting under them and ripping them off before the heat of the currently non existent sun sticks them down?

Whether or not you nail the underlay or blow it on with a heat gun I would recommend you use a torch on underlay so it will be easier to bond your shingles.

catlad said:

Whether or not you nail the underlay or blow it on with a heat gun I would recommend you use a torch on underlay so it will be easier to bond your shingles.

Click to expand...

Thank you for your reply.
One last question; is there an acceptable outside temperature that is generally acceptable to lay these type of shingles, at the moment we are about 14 - 16 degrees c.
I may just try to see if I can get a roofer anyway as it's a lot of money to waste if I screw this up!

Which shingles are you referring too? what are the manufacturers recommendations?