4 Risk points you must know to eliminate steel roofing problems.

4 Risk points you must know to eliminate steel roofing problems.

Having concerns when using steel roofing in concealed-fixing method (Boltless System)? Here’s the recommendation to prevent the open sheet at overlapping and the blown-away sheet including how to inspect the steel roof sheet to reduce the risks.

Having concerns when using steel roofing in the concealed-fixing method (Boltless System)? Here’s the recommendation to prevent the open sheet at overlapping and the blown-away sheet including how to inspect the steel roof sheet to reduce the risks.

There was a question from our customer who bought steel sheets from the market (not KS Group products) and faced the open sheet at overlapping problem so, we would like to explain more about “similar roof but not the same roof” for your consideration before making a decision. 

There are several types and similar designs of the roofing boltless system in the market, if you look closer you will be the difference. The differences reflect the quality such as the strength of roof clip, wind uplift resistance, more information please see below.

KS KlipFix39 roof sheet
no open sheet problem at overlapping

Other brands in the market
open sheet problem at overlapping

Important factors The Quality Control Q.C pass
KS KlipFix39 Roofing Boltless System
1. Profile dimension: Cover width, Rib height
2. Rib of sheet: Check the sharpness and tolerance of the rip
“S-bend”
3. Steel Thickness: Check the total steel thickness of 0.47 mm. TCT		 1. Q.C. by Sheet size measuring tool with resolution in mm.
2. Q.C. by 2 sets of Rib measuring tools to check the width and sharpness of the S-bend
3. Q.C. by Thickness Gauge in micrometer unit
Clip / Connector
1. Clip / Connector size
2. S-bend of the rib must be checked every pcs.
3. Recommended steel thickness: 1.0mm		 1. Q.C. by Clip size measuring tool with resolution in mm.
2. Q.C. by Measuring tool for checking the width of the S-bend
3. Q.C. by Thickness Gauge in micrometer unit
Wind Force on the roof
Roofing Boltless System has a wind uplift performance according to the standard and code and performance test comply to engineering safety.		 Certificate from the institute regarding the wind uplift performance test and the strength of the Roof clip under the sheet must be resisted the wind force.
Installation
Roof sheets and flashing are installed by professional and experienced roof installers.		 Certificate of work, installation experiences to avoid the concerns regarding water leakage

Tools for measuring
the size of sheets and rib

Tools for measuring
the size of the rib

Tools for measuring
the size of the rib

Tools for measuring the size of sheets and rib

Tools for measuring the size of rib

The comparison of the Rib of sheet

Conclusion

It is obviously seen that each roof sheet system has a difference width / sharp of rib such as KS KlipFix39 roofing has a deeper sharp and has a consistency width that effect to the roof performance and wind pressure. According to the performance tests and certificates including the QC, pass found by KS Roofing Boltless system are available as mentioned above.  

Therefore, please make sure to check 4 items above or ask the seller / manufacturer before buying the products to ensure the quality and avoid open sheet or blown-away sheet problems.

Thank you for your trust in the use of KS Group products and services.

By KS Group

STP Engineering & Supply Ltd.