Johns Manville Fibreglass Insulation – R14

R-14. It is designed primarily for insulating wood-frame walls, helping improve energy efficiency and indoor comfort in residential and commercial buildings.

What R-14 Means

The R-value measures how well insulation resists heat flow.

• R-14 provides solid thermal resistance suitable for 2×4 wall cavities.

• Higher R-values indicate better insulating performance.

• It helps keep buildings warmer in winter and cooler in summer, reducing energy costs.

Material and Construction

JM R-14 insulation is made from high-quality fiberglass fibers that trap air and slow heat transfer. The batts are typically pre-cut to fit standard stud spacing, making installation faster and easier.

Common features include:

• Lightweight and flexible

• Non-combustible fiberglass material

• Moisture and mold resistant

• Sound absorption properties

• Easy friction-fit installation

Typical Applications

R-14 fiberglass insulation is commonly used in:

• Exterior wall cavities

• Basement walls

• Interior partitions for sound control

• Light commercial construction

• Residential framing

Standard Sizes

Typical batt sizes include:

• 15 in × 93 in (for 16 in on-center studs)

• 23 in × 93 in (for 24 in on-center studs)

Thickness is generally around 3½ inches, designed to fit standard 2×4 wall framing.