Proctor Passive DriFlash Tape
Proctor Passive DriFlash Tape
Proctor Passive DriFlash Tape is a self-adhesive flashing tape specifically designed for window and door openings to prevent moisture ingress.
Benefits of Proctor Passive DriFlash Tape
- Moisture Barrier: Provides critical protection around window and door perimeters.
- Excellent Adhesion: Bonds securely to a variety of surfaces.
- Weather Resistant: Withstands harsh weather conditions.
- Vapour Permeable: Allows internal moisture vapour to escape.
- Quick Installation: Easy-to-use peel and stick application.
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Window and door openings
Summarised from the Wraptite UV-SA User Guide Australia (August 2025). Work from the full guide: it has the drawings and every detail. Open the full guide (PDF)
- Pre-fill joints, gaps and cracks wider than 6 mm with a bead of liquid-applied flashing and let it cure fully.
- Fill smaller gaps with liquid-applied flashing and smooth it across the surface with a putty knife.
- Cut a 150 mm length of YouByute Flexi Tape for each corner, or 200 mm for 140 mm framing, and adhere it inside the frame flush with the inner edge of the studwork.
- Stretch the rest over the substrate in line with the corner and seal it with a squeegee.
- Cut 300 mm lengths of DriFlash Tape and apply them to the upper corners above the YouByute Flexi Tape, wide enough to fold 50 mm onto the exterior face.
- Cut the tape at the corner so it splits into a corner piece, then squeegee outwards to remove air pockets.
- Apply the Wraptite UV-SA membrane across the opening, make diagonal cuts from corner to corner, fold the flaps into the window framing and trim the excess.
- Cut DriFlash Tape to the sill length plus at least 300 mm and apply it along the sill, running at least 150 mm up each jamb and covering any exposed framing.
- Make a 90° cut in the overhanging tape, crease it firmly, fold it down and adhere it to the membrane with a squeegee or roller.
Penetrations and repairs
Summarised from the Wraptite UV-SA User Guide Australia (August 2025). Work from the full guide: it has the drawings and every detail. Open the full guide (PDF)
- Make sure surfaces are clean, dry and free from bond-breaking contaminants, sharp protrusions or anything else that may hinder adhesion.
- For simple square-edged penetrations only, use 150 mm DriFlash Tape folded half onto the membrane and half onto the penetration.
- Seal all corner seams with liquid-applied flashing.
- Treat fixings that are flush with or penetrate the membrane with DriFlash Tape at least 75 mm wide, and repair small tears the same way.
- Cover areas of peel-back and reverse shingle laps with DriFlash Tape overlapping the surface by at least 75 mm.
- Seal substrate left exposed by large tears or awkward penetrations with DriFlash Tape with a minimum 75 mm overlap, or with liquid-applied flashing.
Window openings in ProctorWrap on framing
Summarised from the Proctor Group Australia, ProctorPassive Window Detailing Guide: ProctorWrap and ProctorPassive window installation guide for timber and steel framing applications (Sept 2025). Work from the full guide: it has the drawings and every detail. Open the full guide (PDF)
- Start once the ProctorWrap or ProctorPassive membrane has been installed onto the timber or steel framing.
- Make diagonal cuts across the opening from corner to corner.
- Fold all flaps except the top flap back onto the framing and trim the excess, leaving the top flap in place.
- At both upper corners, cut the wrap approximately 25 mm away from the window along the diagonal, then fold the upper flap up.
- Cut a length of YouByute Flexi Tape (stud width + minimum 50 mm) for each bottom corner.
- Squeegee the split of the tape tightly into the corner while keeping half the release liner on, then remove the other half and adhere it to the jamb.
- Stretch the tape and fold it onto the membrane, taking care not to stretch it more than required, and squeegee it down.
- Cut DriFlash Tape to the window perimeter length plus 75 mm for an overlap.
- Apply it around the perimeter of the window frame with any overlap or join located at the head.
- Fold the DriFlash Tape onto the membrane everywhere except at the head, remove the release liner and adhere it. Tuck the top flap of DriFlash Tape under the top flap of the membrane.
- Bring the upper flap of the membrane down over the upper part of the DriFlash Tape perimeter.
- Fold the flap at the head, staple it to the back of the framing and trim any excess material.
- Cut a 150 mm length of DriFlash Tape to make a 150 mm x 150 mm square, then cut it along the diagonal into two dovetails.
- Fold and adhere the dovetails onto the perimeter DriFlash Tape so the cut in the wrap is fully covered. Repeat at the other top corner.
- On ProctorPassive Rainscreen (RS-IT), also patch both bottom corners with dovetails in the same way.
The guide protects the framing around the opening before the window is fitted. It does not cover window flashings or the seal between window and wrap; confirm those with the window and cladding manufacturers.
Insulation Installation - Do It Yourself
Many homeowners choose to install their own insulation. Done properly, it can be a rewarding DIY project that makes your home more comfortable and energy efficient. To get the best results, it’s important to install insulation batts correctly. Otherwise, their performance can be reduced by up to 50%. If you choose to take on the home insulation installation yourself, we strongly recommend that you familiarise yourself with the proper process. Make sure you check the relevant standards prior to commencing the installation.
Using a sharp knife, and a thin plank of wood as a guide, can make cutting insulation batts easier. Experienced insulation installers will often size up the cut with a glance and press the insulation against a vertical timber wall stud before cutting the batt to the desired width or length. This can save time, but care must be taken to ensure that you keep the knife blade well clear of any wiring or other appliances.
General install tips
DIY Install Tips for Beginners
The following principles of installing insulation will ensure the best possible performance from home insulation.
- Avoid gaps in insulation
- Do not compress bulk home insulation
- Allow clearance around appliances and fittings
- Protect your home insulation from contact with moisture
- Use a broom handle with a nail in the end to access hard to reach areas
- Provide vapour and moisture barriers to prevent condensation
Improve the Thermal Performance of Home Insulation
- Fit batts snugly leaving no gaps around ducts and pipes
- Make sure corners, junctions of wall-floor-ceiling are fully covered
- Isolate metal framing from contact with cladding
- Insulate window frames or install windows with thermal breaks
Home Insulation Clearance Requirements
Some appliances and fittings, such as recessed downlights and heater flues, require free space around them for the dissipation of heat, to reduce fire hazard. Insulation should not be placed against these fixtures.
- Recessed downlights – Minimum clearance of 25mm
- Flues and exhaust fans – Minimum clearance of 25mm
- Electrical wiring – Keep wiring clear of insulation (check with electrician before installing insulation)
Condensation
Home insulation, correctly installed, can keep the interior surface temperature of ceilings and external walls above the dewpoint, preventing condensation on these surfaces. Condensation control involves preventing moist air from coming into contact with cold surfaces below the dewpoint of the air by one or more of the following means:
- Good ventilation of the moisture-laden air.
- Insulation to keep ceiling and wall temperatures above dewpoint.
- Heating to prevent indoor surfaces from cooling below the dewpoint.
Protect Insulation from Contact with Moisture
Masonry walls are not waterproof. In both brick veneer and double-brick wall construction a cavity between the external masonry wall and the internal lining keeps the internal lining dry. Moisture on the internal face of the external masonry wall can drain away through weepholes or evaporate into the cavity.
- Brick veneer construction – make sure the insulation remains within the frame. Use reflective foil, galvanized wire or building paper to keep the bulk insulation in place.
- Cavity masonry walls – restrain bulk insulation to maintain at least 30mm cavity.
- Existing wall cavities – use ‘cavity fill’ water-repellent loose-fill granular rockwool insulation. This material contains a water repelling agent to prevent absorption of moisture.
Sealed Air Space with Reflective Foil
- Reflective insulation adjacent to a solid surface without an airspace, has no insulative value and acts only as a vapour barrier. To add thermal resistance, reflective insulation must face a sealed air space.
- Maintain a sealed air space of at least 25 mm.
- Eliminate air movement between air spaces on either side of the foil.
- Overlap sheets by 150 mm and tape over joins; seal any gaps.
- Use face-of-wall brick ties instead of ties which penetrate the foil.
- Reflective surfaces should be kept clean and dust free, vertical installation is best for this.
Insulation Installation – Clearance Around Appliances and Fittings
Caution When Using Foil Products
- Keep foil products away from electrical power outlets or lights as they can conduct electricity through the aluminium metal reflective covering.
- Care must also be taken when installing under metal or tile roofs.
Wear Protective Clothing Before You Insulate
- When installing insulation in the roof space, it’s recommended to wear goggles, a dust mask, gloves, long pants and a long sleeve shirt.
Install instructions
How to install ceiling insulation
Do not start work until the site is safe!
Insulation batts installation - all work must be completed to the requirements of relevant standard: AS3999:1992
Step 1
- Ensure you have the right product for the application for your roof insulation installation. Check that you have the correct R-Value required on the drawings/plans.
- Check the joist width to determine the correct insulation batt width. (e.g. 430mm or 580mm)
Start from the furthest point, ensuring the top plate (top of the wall) is covered and work back towards the access hatch of the ceiling. - When installing, energise each batt by giving it a light shake and gently bouncing it on its side, to help the batt expand to the thickness specified on the label. Remember: the best house insulation performance will be achieved by following the manufacturers guidelines.
Step 2
- The insulation may be trimmed to appropriate sizes if required.
- Make sure when installing roof insulation that you leave sufficient clearances around recessed lights, extractor fans, chimney elements and piping as appropriate.
- Where possible, place insulation under electrical cables and ductwork.
- Use any off-cuts to fill voids.
- Glue or fix insulation to the back of the access lid or hatch.
Step 3
- Always make sure your insulation has a snug fit, with a uniform finished height of insulation. Check tips and tricks for good techniques in achieving this.
Step 4
- Once you have completed installing your home insulation, make sure you keep a copy of the product specification together with the documentation of your house.
How to install wall insulation
Do not commence installing insulation until the site is safe!
Installation must be completed to the requirements of relevant standard: AS3999-1992
Step 1
- Ensure you have the right product for the application. Check that you have the correct R-Value required on the drawings/plans.
- Check the joist width to determine the correct insulation batt width. (e.g. 430mm or 580mm)
Work progressively around the perimeter of the building/room. - When installing, energise each batt by giving it a light shake and gently bouncing it on its side, to help the batt expand to the thickness specified on the label.
Step 2
- The insulation may be trimmed to appropriate sizes if required. When cutting* to fill a void, oversize by around 10mm to ensure a snug fit. Do not leave folds or compress the insulation material.
- Fill gaps around lintels, double framing, windows and doors with off-cuts.
- Trim and place product around vents to allow ventilation systems to operate as intended.
- Shape and fit insulation behind electrical wiring and plumbing work.
- Use string to hold in place (if required).
- Ensure insulation does not protrude beyond the line of the studs.
Step 3
- Always make sure your insulation has a snug fit, with a uniform finished height. Check tips and tricks for good techniques in achieving this.
Step 4
- Once you have completed your insulation installation make sure you keep a copy of the product specification with the documentation of your house.
How to install underfloor insulation
Do not start work until the site is safe!
Insulation installation must be completed to the requirements of relevant standard: AS3999:1992
Step 1
- Ensure you have the right product for the application. Check that you have the correct R-Value required on the drawings/plans.
- Check the joist width to determine the correct insulation batt width. (e.g. 430mm or 580mm)
The insulation should always be fitted with strapping. - If fitted to fold down the fold should be no more that 75mm below the bottom of the product.
- Start from the furthest point ensuring the bottom plate is covered and work back towards the access entrance of the underfloor.
- When installing, energise each batt by giving it a light shake and gently bouncing it on its side, to help the batt expand to the thickness specified on the label.
Step 2
- The insulation may be trimmed to appropriate sizes if required.
- Install the insulation in accordance with AS3999:1992, ensuring appropriate clearances from recessed lights, plumbing, extractor fans, chimney elements and piping.
- Refer to relevant standard for guidance regarding placement of insulation and stapling around electrical wiring.
- EXTREME CAUTION REQUIRED. If insulation is covering any wires, apply the Electrical Hazard labels at that point
Step 3
- Place long edge side of the insulation first neatly into the joist/underside of floor intersection
- Pressure fit the body of the insulation flush up under the floor
- Fold the opposite edge down so that a snug fit is achieved
- Leave no gaps between the insulation and the framing and the underside of the floor
- Fix strapping across the underside of the insulation batt
- Each insulation batt should have three runs of strapping applied, one at approx. 100mm from each end and one diagonal or across the centre of the insulation batt.
- Always ensure the insulation has a snug fit. Refer to the tips and tricks for techniques to reach tight spaces.
Step 4
- Once you have finished installing the insulation make sure you keep a copy of the product specification with the documentation of your house.
Top tips and tricks
Preload the ceiling before plastering
If you are building a new home it is a good idea to get the insulation above the ceiling before the roof space is enclosed.
For hard to reach areas, use a broom handle with a nail through the tip to spike the batt and position it.
You need ventilation while you work. If the roof is tiled, kick back some tiles for ventilation.
Try to avoid installing on a hot day, but if you are start nice and early and drink plenty of water throughout the day.
Use thick plywood or a wooden plank to support yourself over the ceiling rafters. This is more comfortable for your knees than kneeling on the rafters.
Knauf Insulation Earthwool Insulation is a new generation of softer, safer and more environmentally friendly glasswool insulation specifically designed for DIY installation.
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