Roofing questions: Answers to Frequently Asked
How is Stormflex different to the spray foam system?
Firstly, we make no claim to insulate your roof . This can be done to
extremely high standards using conventional insulation systems. Unlike
spray foam, we claim to give you a roof where every slate is fully treated
and guaranteed against slippage and leaks.
We do claim that the strength and comprehensiveness of the Stormflex Slate
Conservation System cannot be matched by any other, including spray foam.
This is because all our work is done from the outside; we can therefore
treat every slate on the roof and guarantee that every single one will
be bomb solid when we have finished. As far as we know, spray foam companies
cannot make this claim.
Why not? Because the foam spray is applied from the inside it cannot be
applied to all the slates, e.g. over walls or the ridge. See this job
in North Wales; the company that did this
job were unable to guarantee half the roof
All our work force are highly skilled in the business of working on and
working with slates and therefore need to have the full range of slating
skills together with associated trade skills (e.g. carpentry, lead work,
plastering, chimney work, skylights etc.). Foam spray operatives do not
necessarily possess these skills.
The Stormflex system offers minimum interruption and intrusion, because
all our work is done from the outside, even in the unlikely event of having
to carry out timber repairs. Spray foam insulation on the other hand is
applied to the underside of a roof and therefore has to be carried out
from inside the building.
Use of the Stormflex system does not preclude further work on the roof
or even eventual re-use of the slates. On the other hand spray foam insulation
and spray-on roof coatings can make it very difficult for the slates to
We claim to make a huge difference to the appearance of the roof. For
instance the following roof (photo to follow) was treated by a spray foam
firm who evidently had little grasp of how to improve the appearance of
a roof, leaving in all the lead tags and some poor detailing at the bottom
corner of the chimney (spot the leak point).
If you want to know more about how to conserve your existing slate roof
and make it bomb solid resistant to future winds click on our home
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