- Strongest Installation.
- More Rafter or Pan Clear Span than fascia or roof top attachments (no roof top attachment in high snow areas).
- Costs less money than Freestanding.
- Drawback: Patio Covers height may be too low on Homes with a short wall and a low roof overhang; that is typically found on many track homes that are built on slab and if that is the case for you a fascia or roof top application may be your alternative.
- Patio Cover Installation: Patio Covers are Lag Bolted directly to the wall with a C-Channel Hanger that the roof panels fit into and are secured to the Hanger top and bottom with Sheet Metal Screws (SMS). The Hanger is bolted directly through wood siding, stucco, or hardie plank siding into conventional wood framed wall with 2" x studs. The Hanger can also be directly attached to Concrete, Cement Block Wall or a Brick Wall with special Masonry Anchors.
- Arbor Lattice Installation: Arbor Lattice Covers require a 2" x 8” Douglas Fir Ledger Board to be Lag Bolted to the wall studs and then our 2" x 6" Inside Hanger Brackets are installed on the Ledger Board that the Rafters slide over the top to hide the hanger and are attached with Tek screws. The Ledger Board is required because most walls are built with the studs spaced 16" on center and the Arbor Lattice Rafters are generally spaced 24" on center however rafters can be spaced 24", 20", 16" or 12" on center, the rafter
- Benefit: Utilizes the roof eave as part of the patio cover, allows for taller patio roof heights.
- Drawback: Allowable Projection Clear Span of Cover is generally much less than wall attachment; with a fascia attachment the allowable clear span is limited by the strength of the Homes Eave Roof rafters and Eave Projection, the Eave must be strong enough to support the extra load of the patio cover plus the potential load of rainfall, snow and wind uplift.
- Installation: Patio and Arbor Lattice Covers are connected directly to a 2" Fascia Board.
View Roof Overhang Requirements including Roof Overhang Table per ICC 2006 Engineering Report.
Roof Top Attachment (Not to be used in snow climates.)
- Benefit: Allows more patio roof height, this is especially true on many track homes built on a slab which generally have a short wall height that makes attaching to the wall not a viable option.
- Allowable Projection Clear Span of Cover is generally much less than wall attachment; with a roof top attachment the allowable clear span is limited by the strength of the Homes Eave Roof rafters, the Eave must be strong enough to support the extra load of the patio cover plus the potential load of rainfall and wind uplift.
- Engineering for this application is not available for Snow Load Applications; Roof Top Ledger creates a "snow dam" and puts undue stress on ledger and roof.
- An Asphalt composition roof is really the only practical type of roof cover for this installation.
- Installation: Patio and Arbor Lattice Covers are Lag Bolted directly to a 2" Roof Ledger Board. The Ledger Board is attached to the Roof with 90 Degree Heavy Duty Stanley Brackets (The brackets need to be bent so the new ledger board is plumb.) The Brackets are then Lag Bolted to the Roof and sealed watertight.
- Benefits: Awning doesn't need another structure for support it becomes self-supporting.
- Not as Do-I-Yourself friendly as the attached kits because the Steel Posts need to be poured into new Concrete Footings; the Freestanding is more for the experienced do it yourselfer's or contractors.
- Existing concrete slabs have to be saw cut, concrete removed and excavated for the new concrete footings, this can also be an issue trying to match existing slab with stamped or stained concrete.
- Freestanding awnings are generally one and half to two times the cost of an attached awning depending on your local requirements, height and type/ style of cover.
- Installation: Freestanding awnings require that the posts have to be poured into footings, the posts cannot be bolted down to concrete or wood. The footing size ranges depending on the Design Load and the Size of the awning, the footings may be as small as 21" x 21" x 21" and up to 33" x 33" x 33" and sometimes larger.