Spring Curved Roofing

Curved roofing sheets are so incredibly versatile and add a special touch of elegance to any roof profile.

Spring curved roofing.

Full length sheeting can be laid from eave to eave and spring curved between the ridge purlins. The top face of all purlins must accurately follow and. Spring curved convex roofing. The wide range of curved corrugated roofing sheets produces an eye catching modern contrast to the straight lines of most standard straight sheeting roof projects.

The side laps of convex roofs are to be sealed using a recommended sealant. Faceting is the tendency of. All metal roofing products are susceptible to faceting. This guide has information designed primarily for convex spring curving over an apex.

On lower pitch roofing the process of spring curved ridges eliminates the need for ridge capping. The soft uniformity of corrugated cladding gives it a unique versatility for architectural applications. Table 4 2 1 shows the acceptable radii. Designers need to be aware however of some effects that can occur with spring curving that are sometimes seen when viewed close up.

4 2 spring arched roof sheets in a spring arched convex roof are curved in a radius from eave to eave. Spring or drape curving is the name given to the roof installation process whereby straight sheets of roofing are fastened to a curved structure without prior curving of the sheets. Curving quality available in g300 steel for architectural roofs or bullnosing. The variety of profiles and spring curved shapes gives considerable scope for innovative architecture.

Spandek longline 305 custom orb accent custom orb and custom blue orb can be spring curved for an arched roof. Spring curving ideal for curved roofs. 4 0 curved bent tapered cladding 20 4 1 spring curved ridge roof 20 4 2 spring arched roof 21 4 3 spring curved concave roofs 22 4 4 pre curved sheets 22 4 5 capped bent ribbed roofs 23 4 6 tapered roofing 23 5 0 insulation skylights 24 5 1 heat control 24 5 2 condensation 25 5 3 noise reduction 26. Cgi corrugated roofing may be spring curved using purlins at a maximum spacing of 800mm for 42mm bmt and 1000mm for 48mm bmt.

It is suited to symmetrical roofing profiles of low rib height which can follow a curve without excessive panning or distortion. The curve must have a minimum radius of 12m for 42mm bmt and 10m for 48mm bmt. The maximum radius is 35m to allow for sufficient drainage over a crest. This process eliminates the possibilities of leakage caused by a break in the sheeting at the ridge providing a neat and cheap alternative to ridge.

Using the overall width plus the rise of a convex roof the radius of curvature can be calculated using the equation shown in the diagram below.