August 26, 2014

How to Select the Right Tape

You know you need a great tape and you know Pro Clima tapes are the best.  This rundown will help you select the right tape for the job at hand. If you need complete information, specifications and installation instructions click the product pages linked in each description below.

So let’s break down your taping needs by which basic components you’re taping. In order of appearance:

  • Roofs
  • Exterior Walls & Basements
  • Exterior Penetrations
  • Window Penetrations
  • Interior Ceilings, Walls & Floors
  • Interior Penetrations

SOLITEX Mento Plus roof membrane ready for TESCON Vana tape. Credit: 475


Roof membrane to membrane (SOLITEX) and to wood: TESCON Vana

TESCON Vana is a pressure activated SOLID acrylic adhesive tape.  It is available in a variety of widths.

Between roof battens and membranes with penetrating fasteners: TESCON NAIDECK

TESCON NAIDECK is a self-sealing double sided butyl rubber adhesive tape.

Roof Sheathing (Wood Fiberboard, OSB, Plywood, Exterior Gyp Board)TESCON Vana

Note on Primer:  Sheathings, particularly wood fiberboard or OSB may be rough and/or porous and will require the application of Pro Clima’s Primer RP to ensure a robust bond.  Test application of TESCON Vana by pressurizing tape, waiting several  hours, then peel and verify tenacity of bond.  Typical OSB does not require a primer while typical wood fiberboard does require a primer.


SOLITEX Fronta Quattro taped with TESCON Invis. Credit: Ryall Poerter Sheridan Architects

SOLITEX Fronta Quattro taped with TESCON Invis. Credit: Ryall Poerter Sheridan Architects

Sheathing (Wood Fiberboard, OSB, Plywood, Exterior Gyp Bd): TESCON Vana

See note above regarding primer.

Membranes (SOLITEX behind closed joint rainscreen): TESCON Vana

Membranes (SOLITEX Fronta Quattro behind open joint rainscreens): TESCON Invis

TESCON Invis is functionally the same as TESCON Vana, but is black and has no writing on it.

Membranes (Poly sheets): TESCON Vana

While most poly sheets can be taped with TESCON Vana, with excess residue on the poly sheets adhesion can be unsatisfactory. Quality of adhesion should be confirmed with an adhesion test.

Poured Concrete (to Wood): TESCON VanaExtoseal Encors, or Extoseal Finoc

Because concrete is porous Primer RP is recommended. See video of primer installation here.

TESCON Vana + Primer RP is the vapor open option. Use Extoseal Encors if a flexible, tough, but vapor closed connection will work best or if working below 40F. In warmer weather you can also use Extoseal Finoc to air seal sheating to foundations/slab or under sills in timber structures. It creates a cost effective, durable, self sealing capillary break.

Poured Concrete (to Membranes): recommended CONTEGA HF caulk adhesive, with an expansion loop in the membrane. Alternative is TESCON VANA and Primer RP.

Concrete Block and Stone (to Membranes): CONTEGA HF caulk adhesive (if needed in combination with TESCON Vana with Primer RP), Extoseal Encors, or Extoseal Finoc

Stucco/Plaster (to Membranes):CONTEGA SOLIDO SL/ CONTEGA PV for bonds without need to use primer – or TESCON Vana but then substrate needs Primer RP


Installing Roflex gasket with TESCON tape at duct penetration. Credit: Eco Homes of Vermont

Installing Roflex gasket with TESCON tape at duct penetration. Credit: Eco Homes of Vermont

New wires: Kaflex is an EPDM gasket with integral TESCON Vana tape *

 Kaflex Mono or Duo (one or two wires)

KAFLEX Multi: Multiple Wires (up to 16 cables)

Small pipes (.5″ to 1.5″ dia): above TESCON tapes and Roflex 20

Roflex 20 is an EPDM gasket with integral TESCON Vana adhesive connection.

Larger diameter pipes: above TESCON tapes and Roflex 30, 50, 100, 150, 200, 250, 300 (from 1.5″ dia to 12.75″ dia)  with TESCON Vana tape

Roflex 30 – 300 are EPDM gaskets that require separate tape connection to air barrier.

Wires, Pipes & Beams (already in place):  TESCON Vana, TESCON ProfilTESCON Profect, or CONTEGA SOLIDO SL / SL-D


Installing TESCON Profil tape at window to INTELLO membrane.

Installing TESCON Profil tape at window to INTELLO membrane.

Exterior face taping over window flange (U.S. style): TESCON Vana 150

Exterior face taping to recessed window frame (European Passive House style): TESCON ProfilTESCON Profect, or CONTEGA EXO

See TESCON Profil blog post on pre-making inside corners, here.

Exterior zero profile taping to side of window frame (before installation)CONTEGA EXO

Window sill pan:  EXTOSEAL ENCORS (6,8,12″)

Use Extoseal Encors for the sill and up side 4-6″

either taped to front of window frame (Tilt & turn windows that accommodate this)

or under the full window frame to a back dam or end of the slope of sill.

If Extoseal sill goes under window frame, use vapor open CONTEGA SOLIDO EXO, CONTEGA FIDEN EXO, TESCON Profil, or TESCON Profect to waterproof front edge of window to sill.

See video examples of Extoseal Encors being applied here or here.

Window buck rough opening jambs and headTESCON Vana

Interior face taping to window frames: TESCON Profil, TESCON Profect, CONTEGA SOLIDO SL

Interior zero profile taping to window frame:CONTEGA SOLIDO SL-D, applied before installation of frame



CONTEGA FC tape ready to accept stucco over straw bale. Credit: New Frameworks Construction

CONTEGA FC tape ready to accept stucco over straw bale. Credit: New Frameworks Construction

All exterior material connections noted above, plus:

Membranes (INTELLO, INTELLO Plus or DB+)TESCON Vana

See this blog post for taping INTELLO Plus or DB+ for dense pack cellulose installations.

Poured Concrete, Block and Wood to Membranes: CONTEGA HFCONTEGA Line or 



That’s it!   To simplify things further – note that TESCON Vana is capable of handling the vast majority of most typical tape needs. Often with just a roll or two of a few other tapes, a few gaskets, some primer and adhesive caulking – and you have a complete taping system to make all the connections you need.  If you have any questions please don’t hesitate to contact us.

One last thought: Be sure to have a handy PRESSFIX tape applicator on hand to ensure proper pressure activation of tapes.

* KAFLEX DUO was made with UNITAPE, if used on exterior, please cover with TESCON VANA for waterproof adhesion.

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