Getting exciting now ...at stage of sealing cracks carpeting (well rubber matting) and trimming etc

Question though..

Is there a reason for using polyurethane sealant in motors as opposed to silicon or anything else ?

Polyurethane sealer is relatively expensive compared to other stuff and I see in the Screwfix Catalogue that they have "weathermate" Flexible Roofing Sealer "sticks to timber, metal galvanised steel" and its £3.49 a tube. Cheapest I've seen poly is £5.00.
Would this stuff or any other cheaper sealer be ok ?

Poly sticks like a bastard, silicone doesn't....

A lot is down to the characteristics of the products too - shear strength, UV degradation, resistance to chemicals.
Silicone is an inferior adhesive in a lot of areas.
Unfortunately this is reflected in the prices - I've used Sika products for years and never been disappointed.

http://www.sika.com/

shop around though as prices vary from retailer to retailer!

Cheers chaps..I thought that might be the response.....looks like it's poly then

How many tubes d'yer think for cockpit footwell and scuttle....two ?....three ? four ?

Theres a place down here that doeas Polyurathane Black sealer for £2.65/tube.Trago Mills. Also does other cheap bits and bobs.
Its the muts and I used 2 tubes. Bastard to get off the hands though. And your best clothes when you really know that you should have been doing the car in them!!.

I used one tube to stick (and rivet) all the ali panels.

is that all?

What nozzle you use... hypodermic needle size?

We've used 5 IIRC!

But then we've PU'd everything up... to stop it rattling. Obviously we would be able to hear a pin drop @ 90 ...

But then again...

another alternative is the sealant used for sealing up guttering etc an exterior weatherproof stuff from homebase or b&q has the added bonus of being black