Pergola bracket kits

Choose the shape you want to build first; the brackets follow from it. Every kit below is for 4×4 or 6×6 lumber, and you choose 4×4 or 6×6 brackets on the kit’s own page.

For a plain four-post 4×4 frame, the box isn’t what you’re paying for. A single-bay set on Amazon at about $120 lists four corner brackets and four post bases, the same parts as the $630 Any Size kit, and a set of four corner brackets alone is about $60. Nothing we found shows the steel in the dearer brackets is stronger.

What the extra money buys is range. Low-priced sets are nearly all 4×4, and there are few 6×6 sets. These kits also come as wall-mount, angled, rafter, peaked and six-sided frames, some with a shade sail, and the brackets carry a five-year warranty. For roofed builds, Toja’s Structure Kits page offers an engineer-stamped load document, though it covers freestanding structures only.

Fit is the common complaint on both sides. Low-priced sets state openings from 3.5 to 3.74 inches against real 4×4 lumber at 3.5, and some builders report needing shims. Toja’s 4×4 opening is 3.61 inches, and its own build guide says to take a bracket to the lumberyard and check. Some low-star reviews of the maker mention bracket fit, though most are about shade sails and customer service rather than the steel.

So buy a low-priced set for a simple 4×4 frame if you’ll check the fit before you cut. Pay for one of these kits when you want 6×6, a shape the cheaper sets don’t make, rafter brackets, a sail, or the load document for a permit.

Here is the 4×4 price of the main kinds, cheapest first. The same kit in 6×6 costs about one and a half to nearly two times as much, because the brackets are bigger.

The brackets are the small part of a finished pergola. The maker says plainly that the box leaves out the lumber, the anchoring hardware, any extra screws and caps, and any roof or shade, and that the foundation is yours to design. A basic four-post frame takes four posts and four beams, eight pieces of lumber, and a rafter roof adds more. Price your cut list at a lumberyard before you decide, because species, length and where you live change it a lot, and it’s the one cost the kit price can’t tell you. For the ground under it, pergola cost adds up the rest.

Real 4×4 lumber measures 3.5 inches across and 6×6 measures 5.5, so a bracket sold for either is sized for wood a little under its name. Toja’s openings are 3.61 and 5.62 inches. It asks for dry, straight, dressed lumber and warns that pressure-treated wood holds moisture and can take a long time to dry out.

Toja gives no strength comparison between the two. Its page says to choose the lumber that suits your style and budget, and the 6×6 brackets cost more. What it does give is a limit: it doesn’t recommend more than 12 feet of lumber for the width or depth of any single section. For a wider frame, buy a Double kit and build two bays.

No bracket seller we read states a wind or snow rating for a roofed build. If you plan a solid roof, or live where it snows, ask your building department or an engineer what your site needs, not the brackets’ seller.

Anchoring comes first. The kit leaves out anchoring hardware because the right bolts depend on your surface. On a concrete patio you drill and bolt the post bases down, which takes a hammer drill. On soil you need footings, and on a deck the posts have to land on the joists. Pergola installation walks through each, and pergola over a deck covers decks.

Then the cutting. You need a saw and a way to bring home long lumber. Toja’s build guide says to lay cardboard under the brackets so they don’t scratch your surface and to put two screws in each side of every bracket, and Toja says to push each piece fully into its bracket until it rests on the metal tabs. The screws in the box cover exactly that, so buy extras if you want more.

Check the permit. Many towns exempt a freestanding structure under 200 square feet, but an attached one usually needs a permit at any size. The permit guide has the rules where you live.

Toja covers the brackets against manufacturing defects for five years and its shade sails for two, repairing or replacing the part if you show proof of purchase. The lumber is yours, so a split board is a lumberyard problem.

Returns have to be made within 14 days of delivery, with the kit unused and in its original packaging. You pay the return shipping, and every return carries a restocking fee, so measure your lumber against a bracket’s opening before you order rather than after. Shipping is free to the US and Canada, and US orders of $2,500 or more go through customs clearance, which Toja says costs you nothing. That can apply to an order for the largest sets.

Toja Grid vs Bjorn vs Zen sets the maker’s box, warranty and returns beside two other bracket sellers.