Double Lock Standing Seam (DLSS) on a nail base
- Roofing
- Clips
- Hidden
- Standing
- Standing seam
- Reduced thermal bridges
- Plywood substrate supports limited foot traffic
- Fast and easy installation making it a cost effective solution
General information
Standing seam roofing panels on plywood bonded to polyiso insulation is a roof system with a non-vented warm substrate. The plywood allows for a traditional support to be used. The plywood must be bonded to the polyiso insulation in controlled factory conditions.
A warm roof is a non-ventilated substrate that reduces thermal bridges and increases air tightness within the buildup.
Areas of application
Buildings with all humidity classes (dwellings with high occupancy, sports halls, etc.) with the exception of very high humidity buildings such as swimming pools.
Depending on the region and site, minimum slope 1:12 (4.76⁰ or 8.3%).
Technical data
| Material Thickness | 0.7mm (0.027") |
| Seam Height | 1" or 1.5" (25mm or 38mm) |
| Standard Coverage Dimensions | 16 7/8" OC (1") or 15 7/8" OC (1.5") 428mm OC (25mm) or 403mm OC (38mm) |
| Maximum Dimensions | 30'-0" Length (9.14m) |
| Minimum Dimensions | 4" OC (width) (100mm) |
| Weight | ~1.38 lbs for 16 7/8" (428mm) OC Panels |
| Minimum Slope | 1:12 (4.76⁰ or 8.3%) |
| Drainage Mat Required | Delta VMZINC Mat or VMZINC Approved Equal |
Finishes
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AZENGAR PLUS -
ANTHRA-ZINC PLUS -
PIGMENTO Brown PLUS -
PIGMENTO Blue PLUS -
PIGMENTO Green PLUS -
PIGMENTO red PLUS -
QUARTZ-ZINC PLUS
Documents and drawings
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Installation
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It is critical that the plywood bonded to polyiso insulation be installed dry and then must be protected against moisture before the zinc is installed.
VMZINC DLSS PLUS should be installed directly over a VM Delta Mat (or VMZINC approved equal drainage mat). This drainage mat will cover the appropriate WBR over the plywood. The recommended plywood thickness is 3/4".
Zinc standing seam panels will have two types of fastening clips: fixed and sliding. The fixed area is about 4'-0" long (5 fixed clips at 12" OC) for each panel. The slope of the roof will determine the location of the fixed area. Sliding clips are typically 18" OC for the remainder of the length of the standing seam panel. Clip spacing tightens at the eave and ridge conditions to assist with wind uplift.
The panels should be installed with the protective film in place. Protective film is recommended to be removed within 60 days post installation.