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Common questions
Common Questions
8 totalWhat are the environmental conditions to consider when applying ProForm Joint Tape?
In cold weather with outside temperatures below 50°F (10°C), maintain an interior temperature of at least 50°F (10°C) during joint finishing. In wet/damp conditions, ensure sufficient drying time as excess moisture can slow down the process and cause unwanted shrinkage later on.
How do you apply ProForm Joint Tape with fast setting joint compound?
Apply a uniform layer of fast setting joint compound to the joint, center the ProForm tape over the line and embed it into the soft compound. Use a broad knife or trowel to remove excess material while leaving about 1/32" of compound under the tape.
What drying times can I expect for joint compounds?
Refer to the Approximate Drying Times Chart, which provides guidance on drying periods based on varying conditions of humidity and temperature. Ensure each application of joint compound is allowed to dry thoroughly before proceeding or feathering.
How do I apply ProForm Joint Tape with gypsum veneer plaster?
Apply gypsum veneer plaster over the joint in an even manner, center ProForm tape over the line and embed into the soft plaster. After embedding the tape, remove excess material using a trowel leaving about 1/32" of plaster under the tape.
What are the specifications for ProForm Joint Tape?
ProForm joint tape meets ASTM Standard C475 and is designed to hide and strengthen drywall joints when used with gypsum veneer plaster systems. It effectively works alongside ready mix or setting-type joint compounds.
Is ProForm Joint Tape suitable for use in cold weather?
In cold conditions, maintain an indoor temperature of at least 50°F (10°C) and ensure appropriate drying times based on the environmental condition chart provided.
Full Manual
3 pages
ProForm® Paper Joint Tape
#### 09 29 00 / NGC
Technical Information 800.NATIONAL • 800.628.4662
DESCRIPTION
ProForm® Paper Joint Tape conceals and reinforces drywall joints. The tape is buffed on both sides to ensure the best working qualities and bond. A center creasing process allows easy folding for use at corners. Meets ASTM Standard C475.
BASIC USES Applications
Joint Tape is designed for use with ready mix or setting-type joint compounds and gypsum veneer plaster systems to conceal and reinforce joints of interior walls and ceilings.
##### Advantages
##### Delivery and Storage of Materials
All materials should be delivered in their original, unopened packages and stored off the ground, in an enclosed shelter and protected from weather. Damaged or deteriorated materials should be removed.
Stacking Joint Tape should not be stacked more than two pallets in height. Material Cross-fibered paper – 2-1/16" wide.
INSTALLATION RECOMMENDATIONS General
Installation of joint tape should be consistent with methods described in the noted references and standards and as indicated on the following pages.
##### Environmental Conditions
In cold weather (outside temperature below 50°F [10°C]), temperatures within the building should be maintained at a minimum 50°F (10°C), both day and night, during joint finishing. Adequate ventilation should be provided to eliminate excess moisture.
Wet/damp conditions slow the drying process. Adequate drying time is essential to prevent unwanted conditions such, as delayed shrinkage. Subsequently, 24 hours drying time between coats may not be sufficient. (Refer to the Approximate Drying Times Chart on the next page.)
##### ProForm Joint Tape Treatment With Ready Mix Joint Compounds
Apply a uniform layer of ready mix joint compound, approximately 4" wide over the joints of the drywall. Center joint tape over the joint and embed in the compound to ensure a proper bond. Using a broad knife or trowel, remove excess material leaving about 1/32" of compound under the tape and then apply a thin coat of compound over the tape.
Ceiling and wall angles are treated by folding the ProForm joint tape to fit the angles and embedding it in the compound. After the compound is thoroughly dry (Refer to the Approximate Drying Times Chart on the next page), apply a second coat of ready mix, feathering about 2" beyond the first coat of compound. Continue this process until the desired finish is achieved. All inside corners should be finished with at least one coat of ready mix joint compound with the edges feathered out. All nail or screw head dimples and flanges of trim beads should receive two coats of ready mix joint compound. The second coat over the trims should be feathered out 9" on both sides. Allow each application of ready mix joint compound to dry thoroughly, then wet sand if necessary. If dry sanding is preferred, ventilate, using an approved respirator, and wear eye protection. (Continued on page 3)
Job Name _______________________________________________________________________________
Contractor _____________________________________________________ Date ___________________ Submittal Approvals: (Stamps or Signatures)
TECHNICAL DATA
Physical Properties Packaging Rolls: 75' (22.9 m), 20 rolls/carton
250' (76.2 m), 20 rolls/carton 500' (152.4 m), 10 rolls/carton
###### Approximate Drying Times
|Relative Humidity|Temperature| |---|---| | |32° 40° 50° 60° 70° 80° 100°| |0%|38 hours 28 hours 19 hours 13 hours 9 hours 6 hours 3 hours| |20%|2 days 34 hours 23 hours 16 hours 11 hours 8 hours 4 hours| |40%|2.5 days 44 hours 29 hours 20 hours 14 hours 10 hours 5 hours| |50%|3 days 2 days 36 hours 24 hours 17 hours 12 hours 6 hours| |60%|3.5 days 2.5 days 42 hours 29 hours 20 hours 13.5 hours 8 hours| |70%|4.5 days 3.5 days 2.25 days 38 hours 26 hours 19.5 hours 10 hours| |80%|7 days 4.5 days 3.25 days 2.25 days 38 hours 27 hours 14 hours| |90%|13 days 9 days 6 days 4.5 days 3 days 49 hours 26 hours| |98%|53 days 37 days 26 days 18 days 12 days 9 days 5 days|
The chart above is a helpful guide in determining the approximate drying times for joint compounds under a variety of humidity/temperature conditions. Shaded area is below the minimum application temperature requirement of 50°F (10°C) and is not recommended for the application of joint compound.
Materials Estimating and Coverage
|Sq. Ft. of Wall/Ceiling|Gypsum Board Size 4'x8' 4'x10' 4'x12'|Joint Compound Joint Tape/Ft. Nails/Ct.| |---|---|---| |100|4 3 3|12-14 lbs. /1.0 gal. 35 168| |200|7 5 5|25-28 lbs. / 1.8 gal 70 294| |300|10 8 7|37-42 lbs. / 2.7 gal. 105 420| |400|13 10 9|49-56 lbs. / 3.6 gal. 140 546| |500|16 13 11|62-70 lbs. / 4.5 gal. 175 672| |600|19 15 13|73-84 lbs. /5.4 gal. 210 798| |700|22 18 15|86-98 lbs. / 6.3 gal. 245 924| |800|25 20 17|98-112 lbs. / 7.2 gal. 280 1,050| |900|29 23 19|110-126 lbs. / 8.1 gal. 315 1,218| |1,000|32 25 21|123-140 lbs. / 9.0 gal. 350 1,344| |1,100|35 28 23|135-154 lbs. / 9.9 gal. 385 1,470| |1,200|38 30 25|148-168 lbs. / 10.8 gal. 420 1,596| |1,300|41 33 28|160-182 lbs. / 11.7 gal. 455 1,722| |1,400|44 35 30|172-196 lbs. / 12.6 gal 490 1,848| |1,500|47 38 32|184-210 lbs. / 13.5 gal. 525 1,974|
Applicable Standards and References ASTM C475 Standard Specification for Joint Compound and Joint Tape for Finishing Gypsum Board ASTM C840 Standard Specification for Application and Finishing of Gypsum Board ASTM E119 Standard Test Methods for Fire Tests of Building Construction and Materials Gypsum Association, GA-214, Levels of Finish for Gypsum Panel Products Gypsum Association, GA-216, Application and Finishing of Gypsum Panel Products ProForm Finishing Products, LLC Manufacturer Standards, NGC Construction Guide ProForm Finishing Products, LLC, ProForm® Finishing Products Construction Guide
##### (Continued from page 1) ProForm Joint Tape Treatment With Fast Setting Joint Compounds
Mix the fast setting joint compound per manufacturer’s instructions. Do not contaminate the compound with other materials, dirty water or previous mixes. Do not re-temper.
Apply the fast setting joint compound to the joint. Center joint tape over the joint line and embed into the soft compound. Using a broad knife or trowel, remove excess material leaving about 1/32" of compound under the tape.
Allow the treated joints to set prior to the next coat of compound.
##### ProForm Joint Tape Treatment With Gypsum Veneer Plaster Systems
Trowel gypsum veneer plaster over the joint line filling the channel formed by the tapered edges of the Kal-Kore plaster board in an even fashion.
Center ProForm joint tape over the joint line and embed the tape into the soft plaster. Using a trowel, remove excess material leaving about 1/32" of plaster under the tape.
Allow the treated joints to set prior to general plaster application. Note: For Gypsum Veneer Plaster, during cold weather, maintain a temperature of 55°F (13°C) to 70°F (21°C) before, during and after installation of all system components until veneer plaster has dried.
##### Decoration
Before paint, wall covering or other decorating materials are applied, all areas must be thoroughly dry, dust-free and treated with a coat of good quality, high solids, flat latex primer.
The selection of a paint to give the specified or desired finished characteristics is the responsibility of the architect or contractor.
Gypsum Association GA-214, Levels of Finish for Gypsum Panel Products, should be referred to in order to determine the level of finishing needed to assure a surface properly prepared to accept the desired decoration.
FOR MORE INFORMATION Architectural Specifications
ProForm Finishing Products CSI MasterFormat® 3-part guide specifications are downloadable as editable Microsoft® Word documents at: proformfinishing.com.
##### Latest Technical Information and Update
Visit proformfinishing.com or call National Gypsum Company Construction Services: 1-800-NATIONAL (628-4662).
National Gypsum Company is the exclusive service provider for products manufactured by ProForm Finishing Products, LLC.
The ProForm family of products is manufactured by ProForm Finishing Products, LLC.
National Gypsum Company is the exclusive service provider for products manufactured by ProForm Finishing Products, LLC.
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