Updated October 2026 · Padding Guide

Carpet Padding Cost in 2026: Types, Thickness, and Why It Matters

Q: How much does carpet padding cost?

Carpet pad costs $0.26 to $1.31 per sq ft to buy, across the pad listings at Home Depot and Lowe's on 13 October 2026: $0.26 to $0.45 for 6 lb rebond, $0.34 to $0.51 for 8 lb rebond, $0.47 to $1.06 for memory foam and $0.68 to $1.31 for moisture-barrier pad. A 12x12 room needs about 158 sq ft with waste, so $41 to $208 of pad. Home Depot's carpet installation cost guide lists padding at $1.01 per sq ft on an installed job.

Q: What thickness and density of carpet pad should I use?

CRI 105, the Carpet and Rug Institute's residential installation standard, says cushion thickness for residential carpet "should not exceed 7/16 inch". Shaw's stretch-in guideline sets a residential minimum density of 6 lb at no more than 7/16 in. and warns that the wrong cushion "may result in buckling and wrinkling". The carpet maker's own cushion rule decides, so read it before choosing a thicker or softer pad.

Q: Is memory foam carpet pad worth it?

For a 12x12 room, memory foam pad costs $74 to $168 against $41 to $71 for 6 lb rebond, on the same listings. Whether the softer feel is worth that is your call; the condition is thickness. Pick one at 7/16 in. or thinner unless your carpet maker allows more.

Q: What carpet pad is best for berber or loop carpet?

A firm, thin one. National Floors Direct's published spec puts 3/8 in., 8 lb rebond pad under loop and cut-and-loop carpet, against 7/16 in., 6 lb rebond under cut pile. 8 lb rebond costs $0.34 to $0.51 per sq ft in the listings we read. Check the berber maker's cushion rule too, because the wrong cushion can let loop carpet buckle.

Q: Does carpet installation include padding?

Usually as its own line. Home Depot's cost guide prices padding separately at $1.01 per sq ft, next to carpet and installation. Ask any installer which pad, at what thickness and density, is in the quote, and whether the old pad is removed and disposed of.

Carpet pad costs $0.26 to $1.31 per sq ft to buy, from 6 lb rebond at the bottom to moisture-barrier foam at the top, across the pad listings at Home Depot and Lowe’s on 13 October 2026. A 12x12 room takes about 158 sq ft with waste: $41 to $208 of pad. Home Depot’s cost guide puts padding at $1.01 per sq ft on an installed job, or $160 for the same room.

Pad cost per sq ft and for a 12x12 room

Pad	Per sq ft	12x12 room
6 lb rebond	$0.26-$0.45	$41-$71
8 lb rebond	$0.34-$0.51	$54-$81
Memory foam	$0.47-$1.06	$74-$168
Premium waterproof / moisture-barrier foam	$0.68-$1.31	$108-$208
Home Depot installed-job pad line	$1.01	$160

Lowest and highest listing of each type, 13 October 2026; room column is 144 sq ft plus 10 percent waste. Pad only, no labor.

Price the pad for your room

Length (ft)

Width (ft)

144 sq ft, plus 10 percent for waste: 158 sq ft of pad.

6 lb rebond ($0.26 to $0.45)$41 to $71

8 lb rebond ($0.34 to $0.51)$54 to $81

Memory foam ($0.47 to $1.06)$74 to $168

Premium waterproof / moisture-barrier foam ($0.68 to $1.31)$108 to $208

Home Depot’s installed-job pad line ($1.01)$160

Pad only: no carpet, labor, tack strip or removal. Pad listings at Home Depot and Lowe’s read 13 October 2026; both retailers say local prices vary. The Home Depot line is the padding figure in its carpet installation cost guide, applied to the same area.

Which pad to choose

Pad	Per sq ft	Choose it when
6 lb rebond	$0.26-$0.45	The baseline. Shaw's residential minimum is 6 lb, and National Floors Direct puts 7/16 in., 6 lb rebond pad under cut-pile carpet in its promo installs.
8 lb rebond	$0.34-$0.51	Firmer at the same thickness. National Floors Direct uses 3/8 in., 8 lb rebond pad under loop and cut-and-loop carpet, such as berber.
Memory foam	$0.47-$1.06	A softer feel for the price of the upgrade. Check the thickness: Home Depot also lists 1/2 in. memory foam, which is over CRI 105's 7/16 in. residential limit.
Premium waterproof / moisture-barrier foam	$0.68-$1.31	A film on top stops spills soaking through to the subfloor. Home Depot lists moisture-barrier pads for use over concrete and in basements; worth it where pets have accidents.

The cheapest and dearest listing of each type: 6 lb rebond, Future Foam 3/8 in. 6 lb to Contractor 6, 7/16 in. 6 lb with SpillSafe barrier; 8 lb rebond, Future Foam 3/8 in. 8 lb to Future Foam 1/2 in. 8 lb; memory foam, Future Foam 3/8 in. 8 lb memory foam with moisture barrier to Future Foam Tempur Material 7/16 in. with SpillSafe barrier; premium waterproof / moisture-barrier foam, Home Depot Lifeproof 5/16 in. Waterproof Premium Plus to Lowe's STAINMASTER 13 mm foam with moisture barrier.

The thickness and density rules

Thicker is not better. The Carpet and Rug Institute’s CRI 105 residential standard says cushion thickness for residential carpet “should not exceed 7/16 inch (11 mm)”. Shaw’s stretch-in installation guideline sets residential cushion at a minimum density of 6 lb, not over 7/16 in., warns that “an improper selection of cushion may result in buckling and wrinkling”, and says failure to follow its guidelines may limit warranty coverage.

Loop carpet gets a firmer pad. National Floors Direct’s published install spec is 7/16 in., 6 lb rebond under cut pile and 3/8 in., 8 lb rebond under loop and cut-and-loop styles. For a berber carpet, ask for the pad spec in writing and check it against the carpet maker’s.

Over concrete, Home Depot sells moisture-barrier pads made for the job; the basement carpet cost page prices the basement pads and the moisture tests, and carpet over concrete covers tack strip on a slab.

Pad in the total job

Pad is a small share of an installed floor. Our carpet cost calculator lets you pick each of these four pads and shows its line next to carpet and labor; the cost to carpet a room page gives the installed totals by room size, and carpet labor cost per sq ft covers the labor line. Taking up the old carpet and pad is a separate charge: see carpet removal cost.

Frequently asked questions

How much does carpet padding cost?

Carpet pad costs $0.26 to $1.31 per sq ft to buy, across the pad listings at Home Depot and Lowe's on 13 October 2026: $0.26 to $0.45 for 6 lb rebond, $0.34 to $0.51 for 8 lb rebond, $0.47 to $1.06 for memory foam and $0.68 to $1.31 for moisture-barrier pad. A 12x12 room needs about 158 sq ft with waste, so $41 to $208 of pad. Home Depot's carpet installation cost guide lists padding at $1.01 per sq ft on an installed job.

What thickness and density of carpet pad should I use?

Is memory foam carpet pad worth it?

What carpet pad is best for berber or loop carpet?

Does carpet installation include padding?

Sources and method. The Home Depot, Carpet Padding listings (per sq ft prices of 6 lb and 8 lb pad, memory foam and moisture-barrier pad; checked 13 October 2026); Lowe's, carpet padding listings (per sq ft prices of rebond, fiber and foam pad; checked 13 October 2026); The Home Depot, Carpet Installation Cost Guide (average cost per sq ft: carpet $1 to $4, padding $1.01, installation $0.69 for basic install; furniture moving, removal and disposal priced separately; checked 13 October 2026); The Carpet and Rug Institute, CRI 105 Standard for Installation of Residential Carpet (2019 PDF) (when moisture testing is required, site temperature and humidity, cushion thickness, tack strip size and fastening, substrate repair; section 11.4, use of a power stretcher is mandatory and a knee kicker is not for stretching (failure to power stretch may result in wrinkling and buckling); section 11.5, tufted carpet stretched at least 1 percent in length and width absent manufacturer instructions; section 15, carpet on stairs (waterfall and cap-and-band tack strip, about 1 1/2 in of turn-under shared between the two sides, pile direction); checked 13 October 2026); Shaw Industries, Stretch-In Installation guidelines (revision 09022025) (moisture limits (RH below 85 percent, calcium chloride at most 5.0 lb), site humidity at most 65 percent, cushion density and thickness, tack strips on concrete; checked 13 October 2026); National Floors Direct, Free Flooring Services (included pad specification, furniture moving, free standard stair labor on boxed stairs and its statement that most installers charge 10 to 25 dollars per step, free measuring and next-day estimates; checked 13 October 2026); The Home Depot, How to Calculate Square Footage (order 5 to 10 percent more material for waste; checked 13 October 2026). Per sq ft figures are the lowest and highest selling price of each pad type in the Home Depot and Lowe's listings on 13 October 2026. Room figures are our arithmetic: the floor area plus 10 percent for waste (Home Depot advises ordering 5 to 10 percent extra), times those prices, rounded to the dollar. Local prices vary.