Jan . 11, 2024 11:27 Back to list

metal roofing sheets-longway



WHAT PROCESS IS USED FOR METAL ROOFING SHEETS TO BECOME INSULATED?

It is very difficult for metal roof sheets in Doncaster already fitter to a roof to be retro fitted with insulation. Unless you can get insulation in contact with all of the underside of the metal roof, you will get condensation. If you are using insulation sheets such as polystyrene, you are likely to have some run-off.

One solution is to use a RockWool type insulation which is pushed up into contact with the underside of the metal sheets. This stops airflow and thus, stops condensation. Your best option is to buy a sheet which has been specifically manufactured as a composite insulated roofing sheet.

 

 

WHAT METAL ROOFING SHEETS SIZES ARE MANAGEABLE TO FIT ON ROOF?

We can roll metal roof sheets in Doncaster to any length … but in practice, lengths over 8 or 9 metres start to become difficult to ship and handle. If you have a long roofing sheet requirement, you may want to think about splitting the sheet run into two or three lengths … with an overlap of between 150 and 200mm.

This will make the roofing sheets easier to handling, cheaper to ship and give you flexibility when fitting.

WHAT PROFILES ARE AVAILABLE FOR METAL ROOF CLADDING?

Metal roof cladding is available in two main profiles; a corrugated profile like Box Six, or a trapezoidal profile which is also called box profile or box cladding. Box profile is identified by the height of the crown and the width of cover. For example 32/1000.

HOW IS A METAL ROOF CLADDING SYSTEM PUT TOGETHER?

Metal Roof Sheets in Doncaster are laid into the prevailing so that the overlap is facing downwind.

Sheets should be laid with the first sheet fixed loosely through the valley (trough). This allows you freedom to check that the side edge of the sheet is aligned with the side of the roof as there is only limited play for adjustment as the work proceeds. When you are satisfied that the sheet is correctly aligned on the roof, fit the remainder of screws across the first sheet into the purlins.

HOW DO ANTI CONDENSATION ROOF SHEETS IN DONCASTER WORK?

The manufacture of anti-condensation metal roofing sheets involves applying a special fleece membrane to the underside of steel sheets during manufacture. The membrane consists of a large number of interlaced PES fibres.

 

Metal Roofing Tile Roll Forming Machine

 

 

These absorb the condensation that forms on the underside of the sheet when outside temperatures fall and then slowly release the moisture back into the atmosphere when the temperature rises during the day. Special vented fillers in the eves and at the ridge allow this moisture laden air to vent.

It has several other advantages as it is supplied ready to fit and doesn’t require the purchase of any additional materials such as Plywood, felt etc. The membrane once applied also gives additional sound insulation thereby reducing the noise of rainfall and hail.

If you are interested in our quality metal roofing sheets in Doncaster and wish to know more, please get in touch with our sales team who will be happy to assist with any enquiries.


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