Materials to Build a 12×12 Room

You will have the full list of materials to build a 12×12 room, and the breakdown of the different construction activities.

Next we will see the step by step, to know how much material you need to build a 12 by 12 room.

List of Materials to Build a Room of 4 × 4 Meters and 2.40m Under Roof

The lists of materials you need to build a room are calculated separately, and at the end, a list of summary materials is offered.

How many square meters does a 4×4 room have?

A 12 by 12 feet room can have between 145 and 150 square feet of net area, depending on the layout of the walls and columns and the thickness of the walls (thickness of blocks and plaster). 

12x12ft room, staking out walls to axis	159 sq ft
12x12ft room, staking out interior face walls	172 sq ft
12x12ft room, staking out walls on the outside	147 sq ft

How much Material do I need to Build a 12×12 ft Room with h=7′ 10” (Formwork)

Formwork Summary	U/M	Qty.
Wood on a 1×8” board	m³	0.74
Wood in a 1×2” piece	m³	0.16
Wood in a 2×2” piece	m³	0.02
Wood in a 3×2” piece	m³	0.06
Wood in a 4×3” piece	m³	0.14
Wood in a 4×4” piece	m³	0.6
2 1/2” lace	kg	9.98
3 1/2” lace	kg	1.26

How much Material is required to Build a 12×12 Room h=7′ 10” (Cement, Sand, Stone, Walls, Concrete)

How Much Cement is Needed for a 12×12 feet Room

Cement for 12×12 Room	U/M	Qty.	Bags
Structural Cement (Concrete)	kg	2135	85.4 bags of 25kg
Masonry Cement	kg	789	31.5 bags of 25kg
Glue cement (Floors)	kg	56.8	5.7 bags of 10kg
White cement (Floor joints)	kg	59	5.9 bags of 10kg

How many Cement Bags Required for 12×12 feet Room?

To build a 12×12 room, you need 117 25kg bags of gray cement.

Aggregates and Masonry Summary	U/M	Qty.
Marble dust	m³	0.30
Hydrate of lime	kg	342
River sand	m³	0.37
Artificial sand	m³	6.68
Stone	m³	0.81
Gravel	m³	3.26
Ragstone (in running shoe)	m³	1.30
Water	liters	1069
16”x8”x6” cement blocks	un.	394
Ceramic tile	sqm	15.0

How many Bricks are required for a 12×12 Room

In case of building with bricks, you should know how many hollow bricks you need to make a 12×12 room: 1820 bricks of 250x125x65mm (common 10”x6”x3” brick) are needed.

If you need help, use this BRICKS PER SQUARE METER CALCULATOR.

How much Material do I need to Build a 12×12 Room h=7′ 10” (Steel bar, Rods)

Steel Bar	U/M	Qty .
3/8” rods	kg	150
1/2” rods	kg	211
5/8” rods	kg	149
Tie Wire no.18	kg	4.9

How much Material do I need to Build a 12×12 Room h=7′ 10” (Waterproof Foundations)

Waterproof Summary	U/M	Qty .
Waterproof in Foundations	sqm	10

How much Material do I need to Build a 12 by 12 Room (False Ceiling)

False Ceiling Summary	U/M	Qty .
Aluminum angles	ft	48
Aluminum tee	ft	166
2’x2′ false ceiling panel	un.	49
1″ Reinforced Nails for Concrete	un.	19
#16 Galvanized Smooth Wire	kg	2.76
Pistol Pins	un.	24
Gun capsule	un.	24

How much Material required to Build a 12×12 Room (Electrical Installations)

Electrical Installations Summary	U/M	Qty.
Wire no.12	ft	115
Wire no.14	ft	100
Three way dampers	un.	2
Simple contacts	un.	3
Connection boxes	un.	5
1/2” plastic pipe	ft	82

How much Material do I need to Build a 4×4 meter Room ( Doors and Windows )

Doors and Windows Summary	U/M	Qty.
32”x80” door	un.	1
48”x48” window	un.	1

Do you need window ideas to place in your room? Here you can see some MODERN WINDOW TYPES and their characteristics.

How much Material do I need to Build a 4x4m Room h=2.40m (Paint)

Abstract Painting	U/M	Qty.
Interior vinyl paint 3 layers	liters	2.5
Exterior vinyl paint 3 layers	liters	2.5
4” Cell broaches	un.	1
3” Cell broaches	un.	1

Below are the graphic views of the 12×12 feet bedroom in 2D and 3D with measurements, so you can see and know at all times, the type of bedroom in which the calculation of materials is carried out.

What Size Bed Fits in a 12×12 Room

To find out, WHAT SIZE BED FITS IN A 12×12 ROOM, you can see these 4×4 meters plans with furniture and dimensions.

Breakdown of the Material Calculation to Build a 12×12 ft Room

Let’s analyze this first example to find out how to calculate the materials for a 4x4m room and 2.40 meters under roof.

The sample views and the 2d and 3d model are presented, with isolated foundations (variant 1) and strip foundations (variant 2) and the entire concrete super-structure.

Foundation Materials (with Isolated Footings)

To build the isolated foundations the following is needed:

Foundation	Base	Volume	Qty
Isolated foundation	35”x35”	0.99m³	4u
Total	–	0.99m³	4u

Materials for the Foundation (Beams) of a 12×12 Room

For the foundation beams with 250 Kg/cm2 (m25) concrete, the following quantities of materials are used:

Foundation Beams	Section	Qty	Lengths	Volume
Foundation beams	8”×12”	4u	50 ft	0.92m³
Total	–	4u	50 ft	0.92m³

• 0.19m3 of wood on a 1×8” board
• 0.06m3 of wood in a 1×2” piece
• 0.02m3 of wood in a 3×2” piece
• 0.14m3 of wood in a 4×3” piece
• 2.85kg of 2 1/2” lace
• 0.53kg of 3 1/2” lace
• 395kg of structural cement
• 0.65m3 of sand
• 0.65m3 of gravel
• 195 liters of water
• 45kg of 3/8′ steel bar
• 37.5kg of 1/2″ steel bar
• 61.4kg of 5/8″ steel bar
• 1.4kg of tie wire no.18

Foundation Materials (with Strip Footings)

With this foundation variant, it is not necessary to build reinforced concrete columns. However, you can make CATALAN COLUMNS, where the corner blocks are solid and reinforced with steel rods.

In general, the strip foundation can work better than the isolated foundation, for stable and flat terrain. If you can choose, this would be a good choice.

Strip foundation	Section	Qty	Lengths	Volume
Cyclopean foundation	16”×24”	4u	50 ft	3.70m³
Brace footings	8”×10”	4u	50 ft	0.77m³

For the construction of cyclopean foundations, with 150kg/cm² (m15) concrete, the following amounts of materials are needed:

• 770kg of masonry cement.
• 1.91m3 of river sand.
• 1.99m3 of stone.
• 1.1m3 of small ragstones (3” to 6” stones).
• 385 liters of water.
• 15kg of 1/2” steel bars (protruding bars).

Materials to Build a 4×4 meter Room (continuous footings)

For the continuous footings beams with 250 Kg/cm2 (m25) concrete, which rest on the cyclopean, the following amounts of materials are used:

• 0.12m3 of wood on a 1×8” board.
• 0.04m3 of wood in a 1×2” piece.
• 0.02m3 of wood in a 2×2” piece.
• 1.64kg of 2 1/2” lace.
• 308kg of structural cement.
• 0.52m3 of sand.
• 0.59m3 of gravel.
• 161 liters of water.
• 37kg of 3/8” steel bars (stirrups)
• 26.5kg of 3/8” steel bars.
• 0.6 kg of tie wire no.18.

Making a comparison of the costs of some materials, between the construction of the room with isolated foundations, and with continuous foundations, we have the following result, which can be useful to make better decisions.

Column Materials

For the 250 Kg/cm2 concrete columns, the following amounts of materials are used:

Columns	Qty	Volume	Section	Height
Concrete columns	4u	0.27m³	6”×8”	7′ 4”
Total	4u	0.27m³	–	–

• 0.10m3 of wood on a 1×8” board.
• 0.02m3 of wood in a 1×2” piece.
• 0.02m3 of wood in a 3×2” piece.
• 2.00kg of 2 1/2” lace.
• 116kg of structural cement.
• 0.19m3 of sand.
• 0.19m3 of gravel.
• 57 liters of water.
• 15.8kg of 3/8″ steel bars.
• 37.5kg of 1/2″ steel bars.
• 0.6kg of tie wire no.18.

Roof Beams (Walls)

For the beams or enclosures with 250 Kg/cm2 (m25) concrete, the following materials are required:

Enclosures	Section	Qty	Lengths	Volume
Lintel	6”×4”	1u	4 ft	0.02m³
Beams	6”×8”	4u	50 ft	0.44m³
Total	–	5u	54 ft	0.46m³

• 0.12m3 of wood on a 1×8” board.
• 0.03m3 of wood in a 1×2” piece.
• 0.02m3 of wood in a 3×2” piece.
• 1.32kg of 2 1/2” lace.
• 0.73kg of 3 1/2” lace.
• 198kg of structural cement.
• 0.32m3 of sand.
• 0.32m3 of gravel
• 102 liters of water.
• 77.8kg of 3/8″ steel bars.
• 0.7kg of wire no.18 (to tie).

Cinder Block Wall Materials

Walls	Width	Area	Length	Qty
16”x8”x6” Block walls	6”	340 sq ft	50 ft	4u
Total	–	340 sq ft	50 ft	4u

For the placement of CINDER BLOCKS you will need:

• 394u of 16”x8”x6” blocks.
• 218kg of masonry cement.
• 120kg of Lime hydrate.
• 0.82m3 of sand.

In the calculation, the openings have been discounted.

If you definitely use bricks, you can see all the WAYS TO PLACE BRICKS IN WALLS and their characteristics.

Finishing in Walls, Columns and Beams

For the finishing of walls (60m²), with backsplash, plaster and stucco, you will need:

• 426kg of masonry cement.
• 45kg of white cement.
• 0.30m3 of marble dust.
• 222kg of lime hydrate.
• 1.95m3 of sand.

Roofing Materials

For the construction of the reinforced concrete roof slab with a strength of 250kg/cm² (m25 concrete), the following are needed:

Floors and Slabs	Thickness	Volume	Area
Reinforced concrete cover	6”	2.40m³	172 sq ft
Total	–	2.40m³	172 sq ft

• 0.22m3 of wood on a 1×8” board.
• 0.01m3 of wood in a 1×2” piece.
• 0.60m3 of wood in a 4×4” piece.
• 2.34kg of 2 1/2” lace.
• 1030kg of structural cement.
• 1.69m3 of sand.
• 1.69m3 of gravel.
• 505 liters of water.
• 136kg of 1/2″ steel bars.
• 1.2kg of wire no.18 (to tie).

You can also see HOW MANY RODS ARE NEEDED FOR A SLAB of any size.

Floor Materials

For the construction of the ceramic floor, with a 40mm mortar pre-floor, the following are needed:

Floors and Slabs	Qty	Area
600x600mm ceramic floor	1u	153 sq ft
Total	1u	153 sq ft

• 145 kg of masonry cement.
• 161 sq ft of ceramic slab.
• 14 kg of white cement.
• 56.8 kg of adhesive cement.
• 0.37 m3 of river sand.
• 0.34 m3 of artificial sand.
• 0.41 m3 of gravel.

How much Material do I need to Build a 12×12 ft Room with Ceramic Tile?

Cement	Sand	Hydrate lime	Cem. in Joints
8.30 bags of 25kg	0.4 m³	29.4kg	21kg

Losses are included.

To know the amount of materials to make a 4×4 meters floor, you can review this page with information on HOW MUCH CEMENT YOU NEED PER SQM OF FLOORING, depending on the type of floor.

Remember that each HOUSE DESIGN and each construction project have their own characteristics, which must be analyzed specifically.

This applies to conditions of land, if it is an extension, if it is planned to build on the second level later, among many other variables to consider.

If you have doubts, write it in the comments. See other MATERIAL CALCULATIONS.