Does ThruFlow Premium Decking require gapping between panels? – Thruflow

Does ThruFlow Premium Decking require gapping between panels?

Yes, in both directions. While our panels will not shrink or swell due to changes in moisture, changes in temperature will cause slight expansion/contraction. Therefore, gapping is required both side-to-side and at the panel ends to allow for thermal expansion/contraction.

Rules of Thumb: Each panel should be allowed to grow minimum of 1/16″ in total length (1/32” each end) and 1/32” in total width (1/64” per side) for every 30°F of difference between installation temperature and the hottest temperature expected.

Please consult with your local contractor for regional requirements and/or restrictions.