Instructions / Assembly

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Figure2-1(Fastening)

Shingle underlayment

12"

Shingles

Plywood Deck

Liberty™

Base

flashing must

extend

up a minimum

of 3 courses

of shingles.

Fasteners

approx. 8" o.c.

Fasteners

approx.

8" o.c.

12"

Liberty™

Cap

flashing must

extend up a

minimum of

3 courses of

shingles.

Topcoat

Matrix

™

201 Premium

SBS Flashing Cement

ShingleTie-In

EdgeFlashing

Primed Edge Flashing, Min. 4" Flange Set In TopCoat

Topcoat

Matrix 201

Premium SBS Flashing Cement

Continuous

Metal Cleat

Nail 8" O.C.

Liberty

™

Cap Sheet

Liberty

™

Base Sheet

4" MIN

Pressure Treated Wood

Nailer Mechanically Fastened

EnergyGuard

Insulation

Topcoat Matrix 201

Premium SBS Flashing Cement

Fasteners 3" O.C. Staggered

Matrix 201 Premium SBS Flashing Cement

STEP 1 - Preparing for a Liberty

™

Roof... Is the Surface Ready?

•RemoveAllExistingRoofs… and determine the suitability of the existing roof deck. Alternately,

Liberty

MA base may be installed over certain roof types or deck types not listed. Contact GAF

Contractor Services at 1-800-ROOF-411 for more information.

•InspectTheDeck… and determine what type of preparation is required. Replace damaged deck

materials as necessary.

  •InstallInsulation(ifdesired)… using GAF DRILL-TEC

screws and plates or GAF approved

adhesives. Use minimum 1/2” thick EnergyGuard

Polyiso insulation with approved fiberglass

or paper facer.

AcceptableDecks

15/32"MinimumPlywood..........Apply light asphalt primer at 1/2 to 3/4 gal per 100 sq. ft.

 GAFEnergyGuard

PolyIsoInsulation..........Install Self-Adhered Liberty

Base Sheet directly to

insulation.

 OtherDeckTypesMayBeAcceptable..........Contact GAF Contractor Services at 1-800-ROOF-411

for more information.

Common Mistakes (and How to Avoid Them)...

•PoorRoofDrainage… can lead to leaks at the seams. Before installation, fix the roof deck at

locations where water remains after 48 hours.

•NotPrimingTheDeck… or metal may lead to poor adhesion and is a leading cause of problems.

STEP 2 - Installing Liberty

™

Base Sheet... nailed base or adhered base?

  1.AlignBaseSheets… Starting at the lowest point of the roof where there are gutter or fascia edges,

extend the base sheet over and down the fascia fully behind the metal edge or gutter height,

fastened along roof edge and along fascia 9" o.c. Minimum overhang is 1". Begin with 1/2 width

(19 11/16") sheets in 2-ply systems. Use 1/3 width (13 1/8") starter sheets in 3-ply systems and install

ply (interply sheet) starting with 1/2 width (19 11/16") sheets to maintain side lap offsets.

  2.InstallMABaseSheet(WhereRequired)… using nails with 1" cap heads. Fasten every 9" in the

lap and stagger 2 rows in the field every 18" (Figure 2-1). Cover the entire roof area.

  3.InstallSABaseSheet… by aligning sheets properly before removing the release liners. Roll out

sheet and let it sit or “relax” for at least 30 minutes to minimize the potential for wrinkles that can form

during installation. Remove one side of the release liner at a time.

  4.OverlapFollowingRowsofBaseSheet…horizontally (side lap) by using the line found on the

base sheet. Remove release films from top and bottom half of sheet in turn, carefully rolling back into

position to maintain overlap. Where no line is present, overlap by 3". Overlap vertically (end laps) by

at least 6". Make sure all end laps are at least 18" apart.

  5.RollBaseSheetIntoPlace(SABaseOnly)…using a weighted lawn or linoleum roller.

This improves adhesion to the deck and ensures properly sealed laps.

NOTE: A base sheet is not required; visit www.gaf.com for more information.

CommonMistakes (and How to Avoid Them)...

•NotLettingTheLiberty

™

SheetsRelax…can lead to wrinkles. In colder weather, the rolls require

more time to flatten.

•

NotRollingTheBaseSheets… Is a leading cause of opening laps. Always pay close attention to laps

when rolling the base sheets.

STEP 3 - Installing Liberty

™

Cap Sheet... Where Do I Begin?

1.InstallEdgeFlashing…over the base sheet in a 1/8" bed of cement and stagger nail with two rows

of roofing nails, 3" o.c. Prime the face on the roof and allow to dry before installing cap sheet.

 2.AlignCapSheet…1/4" from the edge at the lowest point of the roof. Roll out and position full

width (39 3/8") sheets with the selvage edge on the high side of the roof. Allow sheet to relax

for at least 30 minutes prior to installing.

3.OverlapFollowingRows…horizontally (Side Lap) by aligning with the bottom of the selvage edge.

Vertical (End Laps) must be overlapped by at least 6" and applied in a 1/8" bed of Topcoat

Matrix

™

#201 SBS Cement. Make sure all end laps are at least 18" apart and have clipped corners (Figure

3-1). GAF recommends installing a bead of plastic cement along the step up length of the lap.

 4.RemoveReleaseFilms…from top to bottom half of sheet in turn, carefully rolling back into

position to maintain overlap. Remove Selvage Edge Release film prior to installing bottom half of

sheet and finishing the side lap.

 5.RolltheCapSheetIntoPlace…using a weighted roller. This improves adhesion to the base

sheet and ensures properly sealed laps.

Common Mistakes (and How to Avoid Them)...

• Not Priming the Edge Metal… can cause the cap sheet to peel away at the edges. Always prime

edge metal before installing cap sheet.

  •Not Applying Cement at the End Laps… Can cause laps to open. All locations where sheets extend

over granules must be set in cement.

STEP 4 - Cleaning Up and Maintaining Your Liberty

™

Roof…

•RemoveAllToolsandMaterialsFromtheRoof… and make sure there is no debris that can

slow or stop the flow of water.

  •DisposeofMaterialsProperly…following all federal, state, and local laws.

  •InspecttheRoofAnnually…and remove any leaves, branches, or vegetation that may be present.

Look for other damage and repair if necessary.

•KeepGuttersClean… to ensure proper water flow and minimize the possibility of damaging ice dams.

Liberty

SBS Cap Sheet

(OPTIONAL)

1/4” Deep Ribbon Of Topcoat

Matrix 201 Premium SBS

Cement Covering

The Edge Beneath

Clip Underside Corners At 45˚

Angle At All End Laps

1/8” Bed Of Topcoat

Matrix 201 Premium SBS

Flashing Cement

12” To 18”

6” Min

12” To 18”

Figure3-1(EndLap)