DynaGlas® panels are always to be fastened to horizontal members (“purlins” in the roof, “girts” in the walls), never to vertical members; the latter do not provide the required cross support. Depending on the intensity of area wind and snow loads, purlins and girts should spaced approximately 4' or less apart. When high snow buildups are expected in gutters between houses, the distance to the first purlin should be approximately 3'.

No predrilling is required when using Palram fasteners. Other fasteners require predrilling, especially with darker colored panels. In order to avoid excessive local stress, it is important that DynaGlas not be fastened down too tightly.

DynaGlas panels can be fastened directly to purlins when the purlins have drip channels or when condensate drip at the purlins is not a problem.

If a structure is equipped with a Palram DrainAway™ Condensate Control System, panels are fastened directly to the horizontal Collector members at the corrugation valleys.

In the absence of a DrainAway System, if it is required that condensate drip at the purlins be minimized, and the purlins do not have drip channels, No-Drip Spacers must be placed between the purlins and the panels. The panels are then fastened at the top of the corrugation with 2" woodgrip or self-drilling screws.

At the side and end walls, DynaGlas can be fastened directly to all girt members at the corrugation valleys.