The difference between the Standard and Heavy Timber packages is the size and scale of the timbers used throughout the structure. Both packages are true timber frame construction, but the Heavy package uses larger components in key areas such as posts, plates, braces, and roof framing. This creates a more substantial architectural look and gives larger structures better proportion between the timber frame, roof size, span, and overall visual weight of the design.
The right choice is mostly a question of scale. Smaller structures often look best in Standard because the lighter timber proportions fit the overall size. Mid size structures can often work well in either package. Larger structures usually benefit from the Heavy package because the larger posts, beams, rafters, and braces better match the roof mass, span, and overall visual weight of the design.
COVER Timberworks also keeps the timber scale consistent throughout the frame. Many field built carpenter structures use a large corner post but then switch to much smaller framing elsewhere. COVER Timberworks designs the posts, plates, rafters, braces, shade bars, and roof components together so the entire structure feels properly scaled.
The table below shows the typical timber size differences:
| Component | Summit Standard | Summit Heavy | Reserve Standard | Reserve Heavy |
| Post | 6×6 | 8×8 | 6×6 | 8×8 |
| Plates, girt, ridge | 3×10 | 4×10 | 6×8 or 6×10 | 8×10 or 8×12 |
| Rafters | 3×8 | 3×8 | 4×8 | 4×8 |
| Knee braces | 2×6 | 3×6 | 4×6 | 6×6 |
| Shade bars, where applicable | 2×4 | 2×4 | 4×4 | 4×4 |
| Roof decking, where applicable | T1-11 | T1-11 | 1×6 T&G | 1×6 T&G |
Timber package options are chosen at design, and they set the size of every member in the frame.
The heavy timber package is what Reserve Series pergolas are built from.
The standard package is what the Summit Series is built from.













