Spring Curved Roofing

This guide has information designed primarily for convex spring curving over an apex.

Spring curved roofing.

Spring curving also known as draping or arching of roofs is a method of providing continuous lengths of roof cladding over a curved roof structure from eave to eave without a ridging. The top face of all purlins must accurately follow and. Cgi corrugated roofing may be spring curved using purlins at a maximum spacing of 800mm for 42mm bmt and 1000mm for 48mm bmt. Table 4 2 1 shows the acceptable radii.

Faceting is the tendency of. Fully tested a full range of load performance tables to suit most applications. Spring curved convex roofing. 4 2 spring arched roof sheets in a spring arched convex roof are curved in a radius from eave to eave.

Designers need to be aware however of some effects that can occur with spring curving that are sometimes seen when viewed close up. The soft uniformity of corrugated cladding gives it a unique versatility for architectural applications. The side laps of convex roofs are to be sealed using a recommended sealant. The curve must have a minimum radius of 12m for 42mm bmt and 10m for 48mm bmt.

All metal roofing products are susceptible to faceting. 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. 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. Spring curving ideal for curved roofs.

It is suited to symmetrical roofing profiles of low rib height which can follow a curve without excessive panning or distortion. Curving quality available in g300 steel for architectural roofs or bullnosing. Spandek longline 305 custom orb accent custom orb and custom blue orb can be spring curved for an arched roof. 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.

Curved roofing sheets are so incredibly versatile and add a special touch of elegance to any roof profile. The variety of profiles and spring curved shapes gives considerable scope for innovative architecture. 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. The maximum radius is 35m to allow for sufficient drainage over a crest.

On lower pitch roofing the process of spring curved ridges eliminates the need for ridge capping.