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A freestanding mantel surround built from stock pine boards and moulding — the look of a fireplace with no masonry, no insert, no chimney.
| Part | Qty | T × W × L | Material | ✓ |
|---|---|---|---|---|
| Top | 1 | 3/4" × 11 1/4" × 48" | 1x12 | ☐ |
| Legs | 2 | 3/4" × 9 1/4" × 32 3/4" | 1x10 | ☐ |
| Leg face pieces | 2 | 3/4" × 5 1/2" × 44" | 1x6 | ☐ |
| Back depth build-out | 4 | 3/4" × 2 1/2" × 44" | 1x3 | ☐ |
| Upper reveal board Positioned so 2-1/2" is revealed below the crown, matching the 1x3 reveal. | 1 | 3/4" × 3 1/2" × 33 1/4" | 1x4 | ☐ |
| Front decorative rail | 1 | 3/4" × 2 1/2" × 33 1/4" | 1x3 | ☐ |
| Front panel | 1 | 3/4" × 7 1/4" × 51" | 1x8 | ☐ |
| Blocking (short) | 4 | 3/4" × 5 1/2" × 3/4" | 1x6 | ☐ |
| Blocking (spacers) Block between the rear 1x3s, ~7-3/4" as needed. | 2 | 3/4" × 5 1/2" × 7" | 1x6 | ☐ |
| Item | Qty | ✓ |
|---|---|---|
| 1x12, 8 ft (Pine) Top board. | 1 each | ☐ |
| 1x10, 6 ft (Pine) Legs. | 1 each | ☐ |
| 1x8, 6 ft (Pine) Front decorative piece. | 1 each | ☐ |
| 1x6, 10 ft (Pine) Face pieces and blocking. | 1 each | ☐ |
| 1x4, 4 ft (Pine) Front decorative piece, positioned to reveal 2-1/2" under the crown. | 1 each | ☐ |
| 1x3, 8 ft (Pine) Back depth build-out and blocking. | 3 each | ☐ |
| Small crown moulding, 6 ft | 1 each | ☐ |
| Edge moulding, 8 ft For the inset square detail — see the last step. | 1 each | ☐ |
| Pocket hole screws, 1-1/4" Optional. | 1 box | ☐ |
| Wood glue | 6 oz | ☐ |
| Wood filler and paint Mantels are almost always painted; a semi-gloss trim paint reads best. | 1 kit | ☐ |
Overall cost: $$. Lumber varies by region, species, and season, so we give a band rather than a figure.
Tools: Drill / Driver, Pocket Hole Jig. Materials: 1x12, 8 ft, 1x10, 6 ft
Lay out the top board and the two legs and join them into the basic upside-down U. If you have a pocket hole jig, attach them from the back so no fasteners show on the face.
Tools: Brad Nailer. Materials: 1x8, 6 ft, 1x6, 10 ft, Wood glue
Add the front face pieces to the legs and top. If you're using a pocket hole jig, read the crown step first — you want to know where the crown lands before you commit the position of the 1x4 reveal board.
Tools: Brad Nailer. Materials: 1x3, 8 ft, Wood glue
Add the 1x3s to the back edges to give the mantel real depth so it projects off the wall like an architectural element instead of a flat board. Block between the 1x3s with short 1x3 pieces (~7-3/4") for rigidity.
Tools: Pencil, Tape Measure. Materials: 1x4, 4 ft, Small crown moulding, 6 ft
Before fixing the upper reveal board (the 1x4), lay your crown moulding in place and adjust the 1x4's position so that 2-1/2" is revealed on the front below the crown, matching the 1x3 reveal. Getting this offset right is what makes the crown sit correctly later.
Materials: 1x6, 10 ft, Wood glue
For the thin decorative face pieces, glue is the answer — nails split them out at the edges. Clamp and let the glue set rather than forcing a fastener where the wood is too narrow to take one.
Tools: Brad Nailer, Miter Saw. Materials: Small crown moulding, 6 ft, Wood glue
Cut the crown moulding to fit, mitering around the outside corners. This is the visible payoff cut — dry-fit and shave the miters until the corners close with no gap before you glue and pin them.
Tools: Miter Saw, Random Orbit Sander. Materials: Edge moulding, 8 ft, Wood filler and paint
If you want the inset-square detail, cut the edge moulding to fit and glue it in place on the front panel.
Fill nail holes, caulk the moulding seams, sand, and paint. A mantel is nearly always painted — a semi-gloss trim paint gives it the crisp architectural look.