Houses with an 1,800 square foot roof
An 1,800 square foot roof covers a one-story house of about 1,450 square feet, or a two-story house of about 2,900 square feet. It is the first size on this list where the shingles fill more than one pallet.
The ridge, drip edge and vent numbers below are for that one-story house: about 47 by 31 feet, under a 6 in 12 roof with 12 inch overhangs.
Shingle order for an 1,800 square foot roof
With 10 percent waste, architectural shingles at 3 bundles a square, #15 felt and 4 nails a shingle:
| Item | Quantity | Cost |
|---|---|---|
| Shingle bundles, architectural | 60 | $2,699 |
| Squares | 18 on the roof, 19.8 to order | |
| Underlayment, #15 felt | 5 rolls | $175 |
| Roofing nails | About 5,069 | Not priced |
| Total | About $2,874 |
1,980 square feet with the waste is 19.8 squares, so 19.8 × 3 = 59.4, rounded up to 60 bundles, and 1,980 ÷ 400 = 4.95, rounded up to 5 rolls of felt. Prices: $44.99 a bundle and $34.99 a roll. The starting prices come from the store listings and cost guides under Sources, last checked in October 2026. Prices vary by region and season, so change any price to match your store or your quote.
IKO packs its Cambridge architectural shingles 56 bundles to a pallet, so 60 bundles is 1 full pallet plus 4 bundles. Other makers pack differently.
How waste and shingle type change the order
Ten percent waste suits a simple gable roof. With hips and valleys, plan on about 15 percent, which makes this order 63 bundles instead of 60.
| Waste | Squares to order | Bundles | Architectural shingles | Three-tab shingles |
|---|---|---|---|---|
| None | 18 | 54 | $2,429 | $2,321 |
| 10%, simple gable roof | 19.8 | 60 | $2,699 | $2,579 |
| 15%, hips and valleys | 20.7 | 63 | $2,834 | $2,708 |
Three-tab shingles also come 3 bundles to a square, so the count holds and only the price changes. Shingles packed 4 bundles to a square would take 80.
Underlayment and nails for 1,800 square feet
5 rolls of #15 felt ($175), 10 rolls of #30 felt ($350) or 2 rolls of synthetic ($182). From 2 in 12 up to 4 in 12, the code wants a double layer, about 10 rolls of #15 felt. Nails: about 5,069 at 4 a shingle, or 7,604 at 6 for high wind; three-tab takes 6,336 or 9,504.
Ridge cap and drip edge on an 1,800 square foot roof
These go by length, not area. On the 47 by 31 foot house above, a gable roof has one long ridge; a hip roof has a short ridge and four hips that need cap too.
| Roof shape | Ridge | Hips | Cap bundles, 20 ft each | Cap cost | Drip edge |
|---|---|---|---|---|---|
| Gable | 49 ft | None | 3 | $225 | 171 ft |
| Hip | 16 ft | 99 ft | 6 | $450 | 163 ft |
Cap is $74.99 a bundle. The code wants drip edge on every eave and rake, lapped 2 inches, so buy a little extra.
Attic vents under 1,800 square feet of roof
The code sizes attic vents by the floor under them: 1 square foot of open vent for every 150 of attic, which is 1,392 square inches over the 1,450 square foot house above. It is 696 if 40 to 50 percent of the vents sit within 3 feet of the ridge and the rest low, plus a ceiling vapor retarder in climate zones 6 to 8. Check the net free area printed on each vent's box.
Is 1,800 square feet your roof or your floor?
This page is for 1,800 square feet of sloped roof. A roof is bigger than the floor under it, so the table works both ways.
| Roof pitch | Ground an 1,800 sq ft roof covers | Roof over an 1,800 sq ft floor | Bundles for that roof |
|---|---|---|---|
| 4 in 12 | 1,708 sq ft | 2,084 sq ft | 69 |
| 6 in 12 | 1,610 sq ft | 2,211 sq ft | 73 |
| 8 in 12 | 1,498 sq ft | 2,376 sq ft | 79 |
| 10 in 12 | 1,383 sq ft | 2,574 sq ft | 85 |
| 12 in 12 | 1,273 sq ft | 2,796 sq ft | 93 |
The floor column is a one-story house one and a half times as long as it is wide, with 12 inch overhangs. With 1,800 square feet of floor and a 6 in 12 roof, the roof is about 2,211 square feet and takes 73 bundles, 13 more than the list above. On a two-story house with 900 square feet a level, it is about 1,148 square feet and 38 bundles. The roof area calculator measures your own.
What an 1,800 square foot shingle roof costs
Shingles and felt come to about $2,874, or $2,754 with three-tab, before nails, cap, drip edge, flashing, vents, delivery and tax. Installed, HomeAdvisor puts an asphalt shingle roof at $4 to $12 per square foot, which is $7,200 to $21,600 here, plus $1,800 to $9,000 for the tear-off. The 1,800 square foot roof cost page breaks that down.
The job at 1,800 square feet
More than a pallet of shingles weighs too much for most pickups, so the supplier delivers. Many can drop the bundles right onto the roof with a boom, which saves carrying 60 bundles up a ladder. The code says the roof has to carry the materials and equipment put on it during the job, so the bundles are spread along the ridge, not stacked in one spot.
Before you order
A rooftop delivery has to happen after the tear-off and the new underlayment, or the bundles sit in the way. Line up the delivery date with the crew, and keep the truck off the septic field, the lawn over pipes and the driveway edge.
Other roof sizes
The next size down, 1,600 square feet, takes 53 bundles. The next size up, 2,000 square feet, takes 66 bundles.
1,000 sq ft1,200 sq ft1,500 sq ft1,600 sq ft2,000 sq ft2,200 sq ft2,400 sq ft2,500 sq ft3,000 sq ft3,500 sq ft4,000 sq ft
Common questions
How many bundles of shingles do I need for an 1,800 square foot roof?
60 bundles at 3 a square with 10 percent waste, or 63 with 15 percent for hips and valleys.
How much do shingles cost for an 1,800 square foot roof?
About $2,874 for architectural shingles and felt, or $2,754 with three-tab, at store prices checked in October 2026. Nails, flashing, ridge cap and labor are extra.
How many bundles of ridge cap do I need for an 1,800 square foot roof?
About 3 on a plain gable over a 47 by 31 foot house, with a 49 foot ridge, or 6 as a hip roof, with 115 feet of ridge and hips. Measure yours and enter it in the calculator.
How many pallets of shingles for an 1,800 square foot roof?
A little over one. With 10 percent waste the roof takes 60 bundles, and IKO packs its Cambridge architectural shingles 56 bundles to a pallet. Other brands pack differently.
Can shingles be delivered onto the roof?
Many suppliers deliver with a boom truck that sets the bundles right on the roof. The roof has to hold that weight, so the bundles are spread out along the ridge rather than left in one pile. Ask your supplier when you order.
How many bundles of shingles do I need for an 1,800 square foot house?
About 73 with 10 percent waste for a one-story house, because 1,800 square feet of floor under a 6 in 12 roof with 12 inch overhangs has about 2,211 square feet of roof. A steeper roof takes more.
Tools for this job
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- Chalk line. Snaps straight lines so every row of shingles stays even.
- Roofing hatchet. Drives roofing nails and has a gauge that sets how much of each shingle shows.
- Hook blades for a utility knife. Cut shingles from the top without slicing what is underneath.
- Flat pry bar. Lifts old shingles and pulls nails.
- Roof safety harness kit. Ties you to an anchor on the roof so a slip does not turn into a fall.
Sources
- International Residential Code 2021, Chapter 9: roof drainage (R903) and roof coverings (R905)
- GAF Timberline HDZ specifications (architectural shingles)
- GAF Royal Sovereign specifications (three-tab shingles)
- McCoy's Building Supply: roof shingle prices
- McCoy's Building Supply: roofing underlayment prices
- McCoy's Building Supply: GAF TimberTex hip and ridge cap shingles
- International Residential Code 2021, Chapter 8: attic ventilation (R806)
- IKO Cambridge technical data sheet (architectural shingles, bundles per pallet)
- HomeAdvisor: shingle roof replacement cost, with removal of the old roof
Facts on this page were last checked against these sources in October 2026.