TS-324 Trapezoidal

BRS in 1999 raised the industry’s benchmark again with the launch of the TS-324® Standing Seam Roof System building on the overwhelming success established with the PanelCraft 216/218® roof systems utilizing Superior Seam TechnologyTM

Most standing seam roof technologies are adaptions of 1970's roof system designs.  The design performance criteria for the Metal Standing Seam Roofing System market have substantially changed in the last 50 plus years. 

BRS utilizing proprietary Superior Seam Technology™ the TS-324 Standing Seam Roof System was designed, developed, tested then deployed through a network of license holders in response to these performance changes. The BRS TS-324 roof system design performance provides a manufacturer an economical solution to meet and/or exceed the higher wind/uplift loads including the stricter edge and corner zones while allowing longer span designs the industry now demands. The ever-changing criterion of the construction industry metal roof codes are handled through many BRS patented options available such as the panel side joinery, standard clips (fixed or movable), wind clips, extended stand-off clips and numerous accessories such as the High Capacity Rake Plate with up to 7” of travel. The panel system's three unique field seaming options: RollLokTM, TripleLokTM and QuadLokTM allow for superior performance and design.


The BRS TS-324 Roof System Designed For The 21st Century Consisting Of:

One Panel profile with three seams.

1.  Roll-lok Seam not requiring an electric seamer competing with existing snap together panels
2.  TripleLok Seam with higher wind and water performance than double lock panels on the market
3.  QuadLok Seam providing high velocity wind performance without the use of S5 or any other external clamps

Four patented clip options each with increasing uplift ratings.  

Eliminates the need to reduce spans or provide external clamps  

  • 4” Standard
  • 8” wind clip 
  • 12” wind clip 
  • 16” wind clip 

10b95471f784f6608c910e3b2e8066e1_f80-1.jpgEconomically accommodating higher wind uplift requirements of zoned loads. 

ASCE 7 divides the roof into multiple zones of uplift load 

  • BRS patented technologies allow for zonal conditions to be addressed by mulitple means (ie zonal seaming and/or multiple clip types)

TS-324 Roof System is designed around one panel profile that will out-perform existing snap together panels and field seam panels without the addition of external seam clamps.






Consider The Benefits Of Offering All Three Seams:

By licensing the TS-324 system as your standing seam roof, you will have a standing seam roof system with the highest performance of any on the market and be in a position to offer it at a lower cost than other systems.

Some of the High Performance credentials that BRS Licensees have achieved are:

• Florida High Velocity and Broward/Dade County ratings higher than other systems.
• Higher ASTM E 1592 loads than others in the industry even those using seam clamps.
• Superior weather tightness due to the TripleLok and QuadLok seam configurations.
• Longer panel runs without fixing at center of span or using step in slope details.
• Ability to compete with the snap-together SSR roof projects with same profile .

Key patented features of the TS-324 system that provide benefits to you and your Customers

  • Improved Panel Seam
  • Multiple Panel Clips
  • Proven Accessories
  • Zonal Seaming


The TS-324 panel is one panel profile that can be installed using one or more of three seams.



Seam 1 - RollLok

The RollLok seam is crimped at the panel clips only. The weather tightness and wind uplift ratings are superior to existing snap together panels.

Seam Crimping is accomplished with an inexpensive stand up hand crimper. This process can be accomplished with less time than snapping seams on a snap-together panel.



Seam 2 - TripleLok™

The TripleLok seam is accomplished with an electric seamer making a single pass at 40 feet per minute. The seamer can seam in both directions (up slope then down slope).

The TripleLok seam is essentially a Double Lock seam rotated 90 degrees, thus reducing prying forces that the double lock seam would receive during uplift loads.

Because of the additional forming, the TripleLok resists separation from the clip much longer than the Double Lock Seam.



Seam 3 - QuadLok™

The QuadLok seam is accomplished with an electric seamer making a single pass along the seam running at 40 feet per minute.

The QuadLok seam is the TripleLok seam rotated down 90 Degrees to further reinforce the seam resistance to unfurling under load.



Compare TS-324 ASTM E 1592 Loads with other SSR systems 
(without seam clamps)

Seam 1 - RollLok compared to snap-together systems

Span TS-324 RollLok Brand M
2'-0" 61.1 58.3
5'-0" 28.3 23.1




To obtain design loads equal to RollLok systems, Brand M would have spans as shown below.


TS-324 RollLok Brand M
61.1 58.3
28.3 23.1




Seam 2 - TripleLok with 8" wind clip compared to Double Lock systems.

Span TS-324 TripleLok Brand M Brand B Brand V
2'-0" 106.0 79.0 68.0 65.0
5'-0" 51.9 40.8 31.0 39.0




To obtain design loads equal to TS-324, other manufacturers will have to reduce spans as shown below

TS-324 TripleLok Brand M Brand B Brand V
2'-0" 1'-6" 1'-6" est. 1'-6" est
5'-0" 3'-9" 3'-0" 3'-4"




Seam 3 - QuadLok compared to other Double Lock systems

Span TS-324 QuadLok Brand M Brand B Brand V
2'-0" 108 79.0 68.0 65.0
5'-0" 54 40.8 31.0 39.0




To obtain design loads equal to TS-324, other manufacturers will have to reduce spans as shown below

TS-324 QuadLok Brand M Brand B Brand V
2'-0" Below 1' Below 1' Below 1'
5'-0" 3'-8" 3'-0" 3'-3"




12" wind clip with TS-324 QuadLok seam provides higher uplift loads than double lock, even with wind clamps.

Span TS-324 QuadLok 12" wind clip Brand M Brand B Brand V
2'-0" 183 psf 135 psf 104 psf 99 psf
5'-0" 84 psf 61.1 psf 42 psf 52 psf




Note: Loads are shown with AISI calculated safety factors.



Compare Sealant of Double Lock to QuadLok Seam
Sealant seal isolated by seam configuration during uplift forces 

Compare TripleLok Air and Water Infiltration with other SSR systems
ASTM E 1680-95 

Static Pressure
Difference (PSF) 
AirLeakage Rate
Brand M
Air Leakage Rate
Brand B
Air Leakage Rate
6.24 0.0018 0.007 Not Tested


Not Tested 0.014 0.025
30.0 0.042 Not Tested Not Tested
40.0 0.0046 Not Tested Not Tested