Too many roofing decisions are still driven by the cheapest material price.
But in practice, cheap waterproofing rarely stays cheap if the roof is specified incorrectly.
A good roof specification does more than simply name a product.
It should consider
- the condition of the existing substrate
- moisture within the roof build-up
- insulation performance
- drainage and falls
- detailing and penetrations
- compatibility between system components
- expected service life
- the actual use of the building
When these things are ignored, the result is often predictable
- premature failure
- trapped moisture
- repeated repairs
- disruption to the building
- warranty issues
- higher long-term cost
That is why a good specification often saves more money than cheap waterproofing.
The cheapest option on day one can easily become the most expensive option over the life of the roof.
Good roofing decisions are not made by material price alone.
They are made by understanding performance, risk and the full roof system.
The lowest material price is not the lowest roof cost.
The lowest material price is not the lowest roof cost.