Specification

Technical Assistance 866-333-3SBM (3726).
Visitourwebsiteat www.graceconstruction.com and www.graceresidential.com.
• Beforeinstallingashingsillashing,locatetheRIPCORD.
• Splitthereleasepaperinhalfallowingforeasyinstallation.
3
• Applythepre-cutashingontothenailingangeafterwindow
has been installed. Position jamb flashing above the head flange.
Note: Do not remove the release paper on the other half of the flashing
if future tie-in with top of siding is required by others.
• Unrollashingbyremovingthereleasepaperexposingthe
 adhesive.Rollrmlyintoplaceasnecessary.
• Repeatonotherside.
5
• Installpre-cutashingoverthewindowheadangeby
 removingreleasepaper,exposingadhesive.Rollrmlyinto 
place.
• Mechanicallyfastenheadashingattopoutermostcorners
asnecessary.
6
• Flashingshouldbelongenoughtodirectwateroverthe 
nailing flange of the last course of siding.
• Trimexcessashingthathangsbelowthenailingange.
• Discardinappropriatemanner.
Note: These same steps can be used for other accessory openings
(i.e. under doors, electrical outlets).
8
• Pre-cuttheGraceVycorPlusashingusingthe  
measurement markings.
• Usecautionwhencuttingthemembrane.
2
• Cutandremoveweather-resistivebarrierfromrough 
 openingofwindowsill.Secure,ifnecessary,tofaceofsill.
• Scoreandfoldweather-resistivebarrieraboveheader. 
Temporarily secure to allow for flashing installation.
1
• Removetemporarysecurementofweather-resistivebarrier
 aboveheader.Foldoverheadashing.Sealwithweather-
resistive barrier seam tape.
• Installsidingandashingbelowwindowaspersiding 
 manufacturer’srecommendations.
7
• Re-rollthepre-cutashing.Positioninsideofrough 
opening on the vertical jamb.
• Applyashingtowindowsillbyremovinghalfoftherelease
 paperandexposingtheadhesive.Rollrmlyintoposition.
• Makeverticalreliefcutsstartingfromcornerofwindow 
 sillupward.Rollrmlyintoplaceasnecessary.
Note: Do not extend sill flashing beyond outside edges of jamb flashings.
4
• Installwindowaspermanufacturer’srecommendation. 
 Ifsealantisused,ensureallexcesssealantisremoved 
from nailing flange and surrounding area to provide a
smooth continuous substrate.
Method B: Installation After Weather Resistive Barrier
Vycor,RIPCORD,and“FlashitRight”areregisteredtrademarksandVYCORnerisatrademarkofW.R.Grace&Co.–Conn.
Wehopetheinformationherewillbehelpful.Itisbasedondataandknowledgeconsideredtobetrueandaccurateandisofferedfor
theuser’sconsideration,investigationandverication,butwedonotwarranttheresultstobeobtained.Pleasereadallstatements,
recommendations or suggestions in conjunction with our conditions of sale which apply to all goods supplied by us. No statement,
recommendation or suggestion is intended for any use which would infringe any patent or copyright.
GraceConstructionProducts,W.R.Grace&Co.–Conn62WhittemoreAve.,Cambridge,MA02140
Copyright2013.W.R.Grace&Co.–Conn.TP-160PrintedinUSA09/13CC/DSG/XX