Heat Waterproof

Roofing brackets tipped with breathable

Since then I have praised about the use of breath in waterproofing membranes of sloping roofs.

He emphasized that:

- Membranes are suitable for breathing waterproofing of all types of covers to two waters. This means that you are always on the safe side.

- Respiratory capacity of these membranes can directly raise the insulation.

- No need for ventilation at the bottom.

- Breathing membranes can be installed in both continuous and discontinuous substrates.

OK, maybe you are convinced that the membranes of breath are the best option for sloped roofing. But there are thousands of products out there! How can you distinguish between them?

Breathing membranes: the secrets that make the difference.

1. Lamination method: ultrasonic laminating technology is by far the best, because it leaves all levels virtually unchanged. This is not the case with lamination using heat or adhesives.

2. Temperature resistance: The membranes are very tired in the heat of her top. Temperatures could reach 100 º C in extreme cases. Some Breathable rates would resist for no more than 12 months, maybe less. Check the resistance with temperature carefully spun bonded protection layers. Check the resistance of the temperature in the semipermeable film.

3. Exposure to the sun: There is a huge span of a to 12 months.

Be sure this is the case. PES (polyester) fabrics are more resistant to higher temperatures and tissues UVs polypropylene.

4. Flutter due to wind noise: There are some products that produce an intolerable noise when raised covered. Some other products have become much quieter. Carefully review this parameter.

6. As for the resistance to water penetration, which is part class product?

If the pitch of your roof is less than 25 º C, which would make as the product of class W1. Class W1 means that water will not pass (as test methods of EN 13859-1).

7. And when we say how much breathable breathable we mean?

If you use the SD ratio is best to seek a 0.3 Sd <m.

British standards ask for a maximum vapor resistance of 0.25 MNs / g.

The above conditions should be considered as minimum for membranes to be used in a single ventilated applications. Otherwise, take unnecessary risks!

So things are really simple when it comes to selection the respiratory membrane ideal!

I hope I did not do things that look more complicated. Sorry if I did, but with so many products on the market, one must possess the knowledge to distinguish between sheep and goats!

Chris Strogilis

http://maconwaterproofing.blogspot.com

5. Do not forget the effect of surface tension broken!

In theory all breathing membranes could be used on substrates continuous (sarking type). In practice things are different. Some products are two layers. Some have other very thin layers of protection. In these cases, the contact of the waterproofing layer to the substrate breaks the surface tension of water and leakage will be inevitable.

Please check carefully

About the Author

Civil engineer with postgraduate studies in MBA and Marketing

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