Instructions / Assembly

LANCO–TheHomeDepotInstructions/Assembly—
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When applied as directed, Lanco® Ultra Siliconizer™ will provide a waterproof and weatherproof seal
adhering tightly to most surfaces and will not crack, crumble or peel despite exposure to severe weather or
totaljointmovement.Lanco®UltraSiliconizer™reflectssunraysandreducesinsidetemperatures.
USES: For waterproofing and protecting a wide assortment of approved roofing systems and/or subst r ates
that are structurally soundsuchasconventionalbituminousbuilt‐uproofs, concrete, metal, aged galvanized
metal,bondedtarandgravel,asphaltshinglesandEPDM(Rubber).
IMPORTANT: Even though Lanco® Ultra Siliconizer™ will resist standing water (for 50 hours), do not use on
roofswithaslopelessthan1/2inchperfoot.Ifusedonroofswithslopelessthan1/2inchperfoot,Warranty
willbevoid.Roofswithlessseverepondingareasandimproperdrainagewillrequireannualmaintenanceand
must be re‐coated yearly with an application of two coats of Lanco® Ultra Siliconizer™. Prior to application
overasphaltshingleroofs,theatticareashouldbeverywellventilated(gableventfanworksbest)toprevent
condensationontherooforinbetweenthelayersoftheshinglesordecking.
GENERALSURFACEPREPARATION:
1. WashandRinse:Makesuretheroofisclean.Pressurewashtheroofwithamilddetergentandrinse
thoroughly. Remove all dirt, grease and loose particles such as gravel, old coating, etc. Remove any
mildeworfunguswithableachsolutionof2partswaterto1partbleach.Ifneededusealonghandle
withscrubbrush.Rinsethoroughly.CAUTION‐ Readbleachwarninglabels.Wear rubberglovesand
safetyglasses.
2. Repair:Areaswherewatermayaccumulate formorethan50hoursmust be corrected byusing roof
drainsorotheravailablemeansbeforeapplyingsealer.Iflevelcorrectionsmustbemade,useLanco®
Ultra Level™ self‐leveling underlayment according to label instructions. On any weakened areas of
concretesurfaceuse agoodqualitymasonrycementmixedwithLanco®BondingAgent accordingto
label instructions.Rusty metal must be cleaned with a wire brush and primed with a rust inhibitive
metal primer before application of this product; we recommend Lanco® Gray Oxide Primer. Replace
anyloosefastenersorscrews.Make surecracks,seams,andflashingarecleanand dry.Withaputty
knife, apply Lanco® Siliconizer Crack Filler and Fiber‐Glass Patching Weave over cracks, seams,
flashing,screwsandanyotherstandingobjects.Becertainallsurfacesareproperlyrinsedanddryprior
toapplyingcoating.
3. Prime: In most cases, a primer is not needed. However, a primer is recommended for uncoated
concrete, chalky surfaces or rusty metal. For bare concrete and chalky surfaces, use Lanco® Clear
Acrylic
PrimerSealertosealinternalconcretecracks.Forrustymetal,useLanco®RedOxidePrimeror
equivalent.
4. ASPHALTSHINGLES–Priortoapplicationoverasphaltshingleroofstheatticareashouldbeverywell
ventilated(gableventfanworksbest)topreventcondensationontherooforinbetweenthelayersof
the shingles or decking. Follow proper cleaning and preparation as described above. Be sure all tabs
are completely adhered and sealed. Areas where the existing  material has blistered, buckled or
becomewet,mustberemovedandrepairedusingsimilarproductsorsystem.Apply2coatsofproduct
asdirected,allowing24hoursdryingtimebetweencoats.Besurealledgesandgroovesarecompletely
coatedtoensureauniformthickness.Ifanylargeholes,dents,groovesorflashingtransitionsremain,
apply Siliconizer Crack Filler and polyester weave on those areas not properly sealed. Allow to dry
another 24 hours
 and apply an additional coat of product to these areas. Additional coats may be
neededinordertoprovideacompletelycoveredanduniformcontinuousfilm.
GENERALAPPLICATION:Applywith aheavynaproller orairlesssprayerintwo (2)coats;allow 24hoursdry
timebetween eachcoat.Applyonlyattemperaturesabove50°F.Donotapplyiftemperatureisexpectedto
dropbelow50°Fdegreesbeforethecoatinghascompletelydried.Donotapplyifroofsurfaceisabove95°F.If
roof is too hot, spray with water to avoid sealer from drying too quickly and allow water to dry. Each coat
shouldbeappliedinaperpendiculardirectionfrompreviouscoat;allow24hoursdrytimebetweencoats.Do
not apply if rain is forecast within 6‐8 hours. Do not apply after 4 PM. NEVER THIN OR DILUTE FROM FULL
STRENGTH.