Dicor White Lap Sealant 11oz

Great product

By: Richard on

28 March 2020

I was sceptical that it would be possible to buy a product that would effectively waterproof my caravan roof around a new shower hatch. This actually is a good as it claims to be. The secret to success though is cleanliness. I cannot empathise enough the need to be scrupulously clean around the removal of all the old sealant from the original installation once that is completed pre-mark where the new hatch is going so you place it back in the right place once the no going back part starts. Be doubly sure you have considered everything is ready for permanent and final install. I strongly suggest using the mastic sealing tape Caravan RV sell separately under the flange of the hatch in the joining surfaces, only use quality stainless steel screws. Do not over tighten the screws, when the tape starts the bulge out under the flange when tightening the screws all round evenly stop tightening. Cut off surplus mastic ( use the edge of a putty knife or the likes but not anything real sharp) and use the off cut to fill any dubious gaps. Again clean around with metho and let dry. Ok this is it, cut the nozzle to be about a 8mm hole on about a 30 deg slope. Start at the most disadvantaged spot and apply slowly and evenly directly above the outside rim of the hatch’s flange if not a little bias to the flange side of the joint. This sealant will flow to a small extent but not heaps, if you can do this on a hot day in full sun all the better. Don’t be mean with the product, try to be even and smooth in the application. You need to be all the way round a back to the starting point in less than 10 minutes other wise the first applied product will start to skin over and may not bond together. Look for anywhere the seal looks thin as it flows out and if you are unsure place another bead over the top remember this product actually flows out, don’t panic about the finished look the important thing is the be sure the whole joint is a consistent thickness as near as your skill level allows it to be. When your done your done leave it alone once it start to skin over there’s nothing more to do walk away. I have since had the van out in rain of over 100mm in an hour and my seal is actually better that the original. In short this is a very good product, it only works on horizontal applications because of the flowing action and in a vertical situation it would simple run off. I may add my hatch was about 400mm square and one tube did it comfortably, if the hatch was bigger I would suggest having two tubes, if you throw away half a tube so be it it’s better than running out.

Would be better with a replaceble spout

By: Roy Ellis on

13 March 2020

self levelling a good product

Lap sealer

By: Googs on

23 January 2019

This product is perfect for resealing the hatch and any corners or overlapping joints on the top of a caravan, the finish it leaves is smooth and factory like.

Lap sealer

By: Googs on

24 December 2018

Great product for roofs, easy to apply , great finish.

the right product delivered promptly.

By: Nick on

10 October 2018

excellent for sealing off roof vents and other roof fittings, flows on nice to give a professional finish.