Message Board Thread - "roof inspection of tectum or fibroplank"

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roof inspection of tectum or fibroplank ed 5/11/2004
does anyone have experience surveying a roof which is built over the fibrocementitious material tradenamed "tectum" or "fibroplank"?

 
Re:roof inspection of tectum or fibroplank Randy 6/2/2004
Not sure if you're still looking for input, but I have inspected a significant number of square feet of roof over cementitious decks. What is your question/challenge?
 
Re:roof inspection of tectum or fibroplank stewart 6/3/2004
We are not aware of that particular product, however a roof is a roof. As long as the building is warmer than the outside ambient temperature, by around 10 degrees, you survey in the evening when it is cold and dry and not too windy, you will get decent results. Wet insulated areas will still show up as hot spots.

If the conditions are impossible to achieve or this methodology doesn't work - it is possible to scan the roof using radar technology. We have done this type of survey on hi-rise car parks that are unheated. Radar simply pulses into the deck and maps the trapped water and delamination. It is more time consuming, but works. Good luck with the survey.
 
Re:roof inspection of tectum or fibroplank 1NCaNon 7/6/2004
The last post is not really technically correct. All roof are not the same. The component we are really checking with a roof IR suvey is the INSULATION. Tectum is a cementitious deck wherein wood strands are locked into a mattrix with a portland cement binder. The strands are therefore pretty much encapsulated and thus do not absorb much, if any, water (except some of the 20 plus year old product).

My experience has not been favorable for scanning over this deck UNLESS it has another layer of insualtion involved such as perlite or wood fiber.

Dick Canon
 
Re:roof inspection of tectum or fibroplank stewart 12/1/2004
Regards our first reply and the subsequent response claiming we were incorrect with our advice - I would like to highlight the fact we did say the insulation would be revealed as a hot spot which holds true. The product you describe is known as Stramit in the UK and we have had decent results with this type of deck. The previous response is correct about the water retention of the product. You will still see wet insulation as hot spots regardless of the deck type. The most important thing are the conditions you survey under.
 
Re:roof inspection of tectum or fibroplank Doctor Roof 3/25/2009
ed wrote:
yone have experience surveying a roof which is built over the fibrocementitious material tradenamed "tectum" or "fibroplank"?

Normally, these roofs will appear as wet insulation since there is no rigid insultaion board as an overlayment. The roof will glow like a light bulb. For moisture determination, you may want to use a moisture meter. If all falils, we actually obtain cores of the deck and complete compression testing. The values obtained are compared to the inital values at time of construction. The nwe know if we have a structural problem or not.
 
Re:roof inspection of tectum or fibroplank Doctor Roof 3/25/2009
ed wrote:
yone have experience surveying a roof which is built over the fibrocementitious material tradenamed "tectum" or "fibroplank"?

Normally, these roofs will appear as wet insulation since there is no rigid insultaion board as an overlayment. The roof will glow like a light bulb. For moisture determination, you may want to use a moisture meter. If all falils, we actually obtain cores of the deck and complete compression testing. The values obtained are compared to the inital values at time of construction. The nwe know if we have a structural problem or not.
 


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