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Step 10 cont.: Additional Frame Anchoring. 

Doors with Sidelites: 

Shim above mull post or jambs 
separating doors and sidelites.  Screw 
through the frame into the header, 
adjacent to the shims. 

 

 

Double doors: 

Place 

temporary

 shims above the center 

of the head frame, where doors meet. 
Pre-drill and insert a screw through 
frame into header, then remove the 
temporary shims. 

 

Patio Doors: 

Shim above the mull post(s), Pre-drill 
and insert a screw through the frame 
into the header, at either side of the 
post. 
 

 

Step 11: Weatherproof, Finish and Maintain. 

Provide and maintain a properly installed 
cap or head flashing to protect top of 
surfaces from 

Water intrusion

 and 

damage.  Tape and properly seal the top 
flap of the Water Resistive Barrier (WRB) 
over the head flashing. 
 
Caulk around 

entire 

“weather” side of unit, 

sealing along the brickmould to the flashing material or siding and seal all 
joints between the jambs and moldings. 
 
Seal the joints between the exterior hardware trim and the door face to 

prevent

 air and water infiltration. 

 
Place and set galvanized finish nails through the brickmould around the 
perimeter.  Use exterior grade screws if you are installing a storm door to the 
brickmould.  Countersink all fasteners and cover with exterior grade putty. 
 
Add insulation material to the cavity between the opening and the unit to 
reduce 

air infiltration

 and 

heat transfer

 
All Therma-Tru Steel doors must be finished within several days of the 
installation date for continued warranty coverage. For Fiberglass doors the 
finishing requirement is within 6 months of installation. 
 
Paint or stain according to Therma Tru Finishing instructions.  Do Not paint 
or stain the weatherstrip, it is “friction-fit” and easily removed for painting or 
staining. 
 
All 6 sides of the doors must be finished. For out-swing doors the sides, top 
and bottom must be inspected and maintained as regularly as all other 
surfaces. 
 
All bare wood surfaces such as the door frame exposed to weather should be 
primed and painted or stained and top coated 

within

 two weeks of exposure 

for best performance. 
 
Maintain or replace sealants and finishes as soon as any deterioration is 
evident. For semi-gloss or glossy paint or clear coats, do this when the surface 
becomes dull or rough.  More severe climates and exposures will require more 
frequent maintenance. 
 
Access our website 

www.thermatru.com

 for printable versions of the 

installation and Same Day Stain finishing instructions and to view our 
Troubleshooting video for minor installation issues and adjustments. 

 Finishing Instructions. 

 
Work only when temperatures are between 50°and 90°F and with 
humidity less than 85%.  Do not finish in direct sunlight

 

Steel and Smooth-Star® Doors: 
To paint Doors: 

Clean first with mild detergent and water or use a TSP (tri-

sodium phosphate) solution.  Rinse well and allow to dry completely. Mask 
off hardware, glass and remove weatherstripping before painting.  Use high-
quality acrylic latex house paint, following manufacturer’s directions for 
application.  Use exterior grade finishes for outside surfaces. Paint edges and 
exposed ends of door. 
 

To Paint Doorlite Frames:

 Remove any excess glass glazing sealant by first 

spraying with a window cleaner or water.  Use a single edge razor blade to 
score the glazing along the edge of the frame. Holding the razor blade at a 45 
degree angle, scrape glazing from glass.  Wipe remaining residue off with 
window cleaner or mineral spirits.  Clean frame with a mild detergent and 
water, or use a TSP solution. Rinse well and allow to dry completely.  Mask 
off glass.  Prime door lite frames with an alkyd- or acrylic-based primer. 
Allow primer to dry before applying finish paint coats.  Use high-quality 
acrylic latex house paint, following manufacturer’s application instructions. 
Use exterior grade finishes for outside surfaces. 
 

Classic-Craft® and Fiber-Classic® Doors: 
To Finish Doorlite Frames and Panel Inserts: 

Remove any excess glazing sealant by first spraying with a window cleaner or 
water.  Use a single edge razor blade to score the glazing along the edge of the 
frame. Holding the razor blade at a 45° angle, scrape glazing from glass.  
Wipe remaining residue off with window cleaner or mineral spirits.  Mask off 
glass.  Paint or stain using same materials as for the door. (See below). 

 
To Paint Doors: 

Clean first with mild detergent and water or use a TSP (tri-sodium phosphate) 
solution.  Rinse well and allow to dry completely.  Prime with an alkyd- or 
acrylic-based primer.  Allow primer to dry completely, then paint with acrylic 
latex house paint, following paint manufacturer’s application instructions.  
Use a primer and paint that are compatible.  Use exterior grade finishes for 
outside surfaces.  Paint edges and exposed ends of door. 
 

To Stain Doors: 

Clean first with a clean cloth and mineral spirits and allow to air dry or wash 
door with mild detergent and water, or a TSP (tri-sodium phosphate) solution. 
Rinse well and allow to dry completely.  For stained surfaces, we only 
recommend the use of the stain and clear coat products found in the 

Therma-

Tru Same-Day Stain™ Finishing Kit

.  Apply stain with a rag.  The longer 

the stain is left to “setup” before wiping off, the darker the color will be.  
Using a clean rag, wipe off the stain to the color shade you desire.  Remove 
any excess stain from the panel grooves with the foam brush provided; allow 
the stain to dry for at least 6 hours before applying topcoat.  See 

Therma-Tru 

Same-Day Stain™ Finishing Kit

 instructions for complete details. 

 
Warning:  

Modification or machining of this product can release wood dust, a 
substance known to the State of California to cause cancer. 

 
 
 
 
 
 
 
 
 
 
 
 

Summary of Contents for Pre-hung Door Systems

Page 1: ...rrier and Flexible Flashing We recommend the use of a Water Resistive Barrier WRB applied to the exterior sheathing OSB or other and the use of an adhesive or flexible flashing product to seal around...

Page 2: ...e jamb and on the bottom surface of the jambs and brickmould Note If a sill extender is used place a large bead of caulk at the junction of the extender and the sill approach Step 3 cont Caulking Back...

Page 3: ...ole locations closest to the weatherstrip Close the door and carefully shim between the jamb and the opening behind the adjustable strike plate area Then open the door and drill 1 8 inch dia pilot hol...

Page 4: ...o paint Doors Clean first with mild detergent and water or use a TSP tri sodium phosphate solution Rinse well and allow to dry completely Mask off hardware glass and remove weatherstripping before pai...

Page 5: ...uctos adhesivos o de tapajuntas flexibles para sellar el per metro de la abertura Se debe cortar la WRB en la abertura siga las pautas del fabricante con el cabezal de la leng eta cubierta con cinta a...

Page 6: ...mba y en la superficie inferior de las jambas y las molduras Nota si usa una extensi n para alf izar coloque un cord n de masilla de calafateo grande en la uni n de la extensi n y la entrada del alf i...

Page 7: ...cios gu a de 0 32 cm de di metro e instale los tornillos largos para bisagra en las ubicaciones de orificio m s cercanas al burlete Cierre la puerta y coloque calzas cuidadosamente entre la jamba y la...

Page 8: ...No aplique acabados bajo la luz solar directa Puertas de acero y Smooth Star Para pintar puertas primero limpie con un detergente suave y agua o use una soluci n de TSP fosfato tris dico Enjuague bie...

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