1708 Biaxial Fiberglass

Name: 1708 Biaxial Fiberglass
Brand: Boat Suppliers
SKU: FG-170850-01
Price: 12.95 USD
Availability: InStock
Rating: 4.8 (6 reviews)

1708 Biaxial Fiberglass

SKU:FG-170850-01

$12.95 USD

$12.95 yd

Sale Sold out

Shipping calculated at checkout.

322 in stock

Width: 50"

50"

Length: 1 Yard

1 Yard 3 Yard Pack 5 Yard Pack 10 Yard Roll 25 Yard Roll Full Roll (approx. 52 yards)

Quantity

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1708 is the workhorse for transom, stringer and tabbing work. You get 17 oz of stitched E-glass at +45 and -45 degrees with a 3/4 oz chopped strand mat backer, which means a thick structural ply and a secondary bond surface in one pass instead of alternating cloth and mat.

Where it goes: transom skins, stringer tabbing, hull repairs, bulkhead attachment, anywhere off-axis shear load is the problem.
Resin compatibility: polyester, vinyl ester and epoxy. The mat is stitched to the biaxial layer, so 1708 wets out with epoxy as well as polyester: work resin into the mat side first and roll it down firmly. If you would rather lay a thinner ply with no mat, DB170 is the same 17 oz +/-45 glass without it.
Resin demand: roughly 1.4:1 resin to glass by weight, about 3.9 oz per square foot.
Width: 50 in, cut from 1 yard up to full rolls.
Build rate: 0.044 in per ply, so three or four plies gets a transom laminate up fast.

Roll it out mat side down against the substrate. Cuts ship rolled on a corrugated tube.

Specifications

Biaxial Fabric – This stitch-bonded, non-crimp reinforcement combines unidirectional warp (0°) and weft (90°) fibers for enhanced stiffness without adding weight or laminate thickness. Ideal for high-performance structural laminates, biaxial fabric is commonly used in boat hulls, trailer panels, wind turbine blades, sports gear, and bridge decks.

Each roll includes 17 oz biaxial cloth with a ¾ oz chopped strand mat backing. Roll dimensions: 50″ wide × approximately 52 yards long.

This same fabric is also available in 6" and 12" widths as a 1708 biaxial fiberglass tape.

Includes

1708 Biaxial Fiberglass by the yard

Features

17 oz biaxial (+/-45°) stitched fiberglass for multidirectional reinforcement in structural laminates.
Includes 3/4 oz per square foot of chopped strand mat for bonding to wood, foam, or cured laminate in marine and composite repairs.
Stitched, not woven, so resin saturates quickly with fewer air bubbles in epoxy, polyester or vinyl ester.
Builds thickness fast in bulkheads, stringers, transoms, decks, and hulls.
Works with epoxy, polyester and vinyl ester. The mat is stitched to the biaxial layer, so epoxy wets it out.
Stitch-bonded, so it stays flexible and contours around curves.
Consistent quality for marine, industrial, and DIY work.

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Technical Specifications

E-Glass (stitched)Biaxial stitched + CSMWorks with Epoxy, Polyester, Vinyl Ester

MaterialE-Glass (stitched)

Industry Style #DBM 1708

Weight17 oz/yd² (+ ¾ oz mat)

Weave / ConstructionBiaxial stitched + CSM

Fiber Orientation±45° (double bias)

Thickness0.044"

Available Widths50"

Full Roll Lengthapprox. 52 yd

Resin-to-Reinforcement Ratio~1.4:1 (resin:glass) by weight

Compatible ResinsEpoxy, Polyester, Vinyl Ester

Best ForWorkhorse marine biaxial (+ mat) for hull and transom

Product Data Sheet

Compare Fabrics

Product	1708 Biaxial FiberglassYou're viewingfrom $12.95	1208 Biaxial Fiberglassfrom $16.45	1808 Biaxial Fiberglassfrom $14.45	DB170 – 17oz Biaxial Fiberglass Cloth (No Mat)from $14.45
Material	E-Glass (stitched)	E-Glass (stitched)	E-Glass (stitched)	E-Glass (stitched)
Style	DBM 1708	DBM 1208	LTM 1808	DB 170
Weight	17 oz/yd² (+ ¾ oz mat)	12 oz/yd² (+ ¾ oz mat)	18 oz/yd² (+ ¾ oz mat)	17 oz/yd² (no mat)
Weave	Biaxial stitched + CSM	Biaxial stitched + CSM	Stitched 0°/90° + CSM	Biaxial stitched, no mat
Orientation	±45° (double bias)	±45° (double bias)	0°/90° (stitched)	±45° (double bias)
Thickness	0.044"	0.037"	0.048"	0.030"
Widths	50"	50"	50"	50"
Full Roll	approx. 52 yd	approx. 67 yd	approx. 52 yd	approx. 50 yd
Resin Ratio	~1.4:1 (resin:glass) by weight	~1:1 by weight	~1:1 by weight	~1:1 by weight
Resins	Epoxy, Polyester, Vinyl Ester	Epoxy, Polyester, Vinyl Ester	Epoxy, Polyester, Vinyl Ester	Epoxy, Polyester, Vinyl Ester
Best For	Workhorse marine biaxial (+ mat) for hull and transom	Stiff biaxial build with mat for quick wet-out	Heavier biaxial (+ mat) for structural build	Biaxial strength without mat (cleaner, lighter)
	Selected	View	View	View

What To Expect When You Order Fabric Rolls

What is biaxial fiberglass?

Biaxial fiberglass is a type of fiberglass fabric where the fibers are stitched together in two directions—typically at +45° and -45° angles or 0° and 90°. Unlike woven fiberglass, the fibers in biaxial cloth are not interlaced, but rather laid flat and stitched, which improves strength and drapability.

What is the difference between 1708 and 1808 biaxial fiberglass?

The number refers to the weight: 1708 is 17 oz stitched fabric with an 8 oz chopped strand mat backing. 1808 is similar but with 18 oz stitched fabric. The mat backing improves bond strength with polyester resin.

What is the benefit of using biaxial fiberglass over woven cloth?

Unlike woven cloth, biaxial fiberglass is stitched, not woven, so it lays flatter, wets out faster, and provides superior load distribution without crimped fibers.

Can I use 1708 biaxial fiberglass with epoxy resin?

Yes, you can use epoxy resin with 1708 biaxial fiberglass because it has a stitched mat instead of a chemical binder like chopped strand mat.

How much does 1708 biaxial fiberglass weigh?

1708 weighs about 2 lb per linear yard. The number describes the build: 17 oz biaxial glass stitched at plus and minus 45 degrees, backed by a thin chopped strand mat. The mat face bonds down into the layer beneath it, which is why 1708 is the go-to single-ply reinforcement for transoms and stringers.

How much epoxy resin do I need for 1708 biaxial fiberglass?

To wet out a full 50" wide yard of the 1708 biaxial fiberglass you'll need about 30oz of epoxy resin. This is a thick layup with stitched core and mat, which yields a strong result.

What types of resins are compatible with biaxial fiberglass?

Biaxial fabric works well with polyester, vinyl ester, and epoxy resins. Be sure to choose the right resin system for your project and material compatibility.