Specification

ManualsBrandsSHEETROCK Brand ManualsBuilding materials25 lb. Durabond 90 Setting-Type Joint Compound

Durabond

Submittal Sheet

09250

Sheetrock

Setting-Type

Joint Compounds

For one-day drywall ﬁnishing

– For interior gypsum panels and exterior gypsum ceiling boards

– Unique humidity resistance

– Exceptional bond, low shrinkage

– Unusual check-crack resistance in heavy ﬁlls

– Choice of setting times

Description Sheetrock

brand DurabonD

setting-type joint compounds for drywall interiors and exteriors save time and

money by permitting same-day joint ﬁnishing, and, usually, next-day decoration. They are ideal for heavy ﬁlls

and are virtually unaffected by humidity.

These easy-to-mix chemically setting powder compounds provide low shrinkage and superior bond, which

make them excellent for laminating gypsum panels to gypsum panels, to sound-deadening boards, and to

above-grade concrete surfaces. In addition, D

urabonD setting-type joint compounds can be used for ﬁlling,

smoothing and ﬁnishing interior concrete ceilings and above-grade concrete. Other uses include ﬁnishing

joints in exterior gypsum ceiling boards and presetting joints in veneer plaster ﬁnish systems.

To meet varying job requirements, a full line of D

urabonD joint compounds has been developed to provide a choice

of approximate setting times. D

urabonD 20 joint compound sets in about 20-30 minutes; DurabonD 45 joint

compound sets in about 30-80 minutes; D

urabonD 90 joint compound sets in about 85-130 minutes; and

urabonD 210 joint compound sets in about 180-240 minutes.

Limitations 1. DurabonD setting-type joint compounds are more difﬁcult to sand and smooth after drying and should be

smoothed before set or while damp, but not completely hardened.

2. Setting action cannot be delayed or prevented by dilution with water.

3. Do not apply over moist surfaces or surfaces likely to become moist, or on below-grade surfaces or surfaces

projecting outside building structure unless protected from direct exposure to moisture.

4. Cure new interior concrete surfaces 60 days or more before using D

urabonD setting-type joint compounds.

Remove protrusions, ridges, form or parting oils, grease and efﬂorescence.

5. Prior to using any epoxy coating over any surface treated with joint compound, consult the epoxy coating

manufacturer and follow manufacturer’s recommendations regarding the preparation or suitability of substrates

for the epoxy coating. Many epoxy coatings exert signiﬁcant shear stress on the substrate as the strong epoxy

ﬁlm shrinks while curing/drying. This stress can cause the bond of the joint compound to fail, resulting in

delamination problems.

Application Preparation In cold weather during gypsum panel joint ﬁnishing, a minimum surface, water, mix and air temperature of

45 °F must be maintained until joints are completely dry. Adequate ventilation shall be provided to carry off

excess moisture.

Gypsum Panel Position and apply Sheetrock

gypsum panels according to manufacturer’s recommendations. Mix

Joint Treatment

DurabonD joint compound according to directions on bag. If using Sheetrock gypsum panels, SW edge, preﬁll

the “V” grooves formed by abutting edges with D

urabonD 45 or 90 joint compound. Apply compound directly

over “V” groove with a ﬂexible 5

 or 6 joint ﬁnishing knife. Wipe off excess compound applied beyond the groove.

Allow the preﬁll compound to harden prior to the next application. Cover joint with a thin layer of compound

and embed ﬁberglass or paper joint tape, leaving about 1/32

 of compound under feathered edge and a thin

layer over the tape. After compound has set, apply second coat, feathering out approximately 2

 beyond

ﬁrst coat. After setting, apply third coat, feathering out 2

 beyond second coat. After each coat is applied,

smooth away any tool lap marks or other imperfections prior to setting action. Finish fastener heads with three

coats of joint compound; ﬁnish corner bead and inside corners as required with at least two coats, feathered

and smoothed out onto panel faces.

Summary of content (4 pages)

PAGE 1
Sheetrock Setting-Type Joint Compounds Durabond Submittal Sheet 09250 ® ® – – – – – Description For one-day drywall finishing For interior gypsum panels and exterior gypsum ceiling boards Unique humidity resistance Exceptional bond, low shrinkage Unusual check-crack resistance in heavy fills Choice of setting times Sheetrock® brand Durabond® setting-type joint compounds for drywall interiors and exteriors save time and money by permitting same-day joint finishing, and, usually, next-day decoration.
PAGE 2
Page 2 of 4 Note: For easier sanding and smoothing, use Sheetrock® Easy Sand™ setting-type joint compound or a Sheetrock® ready-mixed joint compound for second and third coats. Decorating F or priming and decorating with paint, texture or wallcovering, follow manufacturer’s directions for materials used. All surfaces must be dry, dust-free and not glossy.
PAGE 3
Page 3 of 4 F ill and seal all openings around pipes, fittings and fixtures with a coat of thinned tile adhesive. For best results, use Type I Ceramic Tile Adhesive that meets ANSI A136.1; this material may also be used to set the tile. With a 1 brush, apply the thinned adhesive onto the raw gypsum panel core at cutouts, and allow area to dry thoroughly prior to application of tile. Before adhesive dries, wipe excess material from the surface of gypsum panels.
PAGE 4
Page 4 of 4 Submittal Approvals Job Name Contractor Product Information See usg.com for the most up-to-date product information. Warning! When mixed with water, this material hardens and then slowly becomes hot. Do not attempt to make a cast enclosing any part of the body using this material. Failure to follow these instructions may cause severe burns that may require surgical removal of affected tissue. Avoid inhalation of dust and eye contact.