The Rumford Store
HeatStop Refractory Mortar
12/6/13

Building a Firebox with HeatStop
DOs and DON'Ts
HeatStop Info Video

National building codes require the use of refractory mortar conforming to ASTM C-199 for installing firebrick and clay flue linings in masonry fireplace and chimney construction.

Regular Portland cement based mortar resists temperatures up to about 600 deg. F, but residential fireplaces operate well in excess of 600 deg. F. Heat Stop resists temperatures above 2000 deg. F, assuring code compliance and a quality installation.

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Material Safety Data
Product Data Sheet

HeatStop hydraulic setting refractory mortar
Dry hydraulic setting refractory mortar that meets ASTM C-199, ASTM C-1283 and all building code requirements. Non-water soluble & Acid resistant Easy to use. Just add water and mix. One product for both firebrick and flue liners. Cast it, color it, use it for repairs. Available in 50# bags or in 10# containers.
HS10 HeatStop II (ten pound pail) ...................... $51.60
HS50 HeatStop 50 (50# bag) ............................ $124.20

Free shipping within the continental US.
To order by phone call 360 385 9974
Questions, overseas and custom orders call 360 385 9974 or email us
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Material Safety Data
Product Data Sheet

HeatStop premixed refractory mortar
Meets ASTM C-199 and all building codes. Ready to use. Just mix. Air-setting Great for laying firebrick in hot dry weather. Water soluble so not appropriate for flues or outdoor fireplaces. Available in 50# buckets or in 10# pails.
HS15P HeatStop Premix (15# pail) .................... $51.60
HS50P HeatStop Premix (50# bucket) ............. $124.20

Free shipping within the continental US.
To order by phone call 360 385 9974
Questions, overseas and custom orders call 360 385 9974 or email us
Return Policy

Material Safety Data
Product Data Sheet

Insul-Stick
Combines insulating value and strength for for parging smoke chambers, repairing fireboxes, flues, etc.
IS5 Insul-Stick (one gallon) ................................... $51.60
(coverage - one sq.ft. 1" thick)
IS20 Insul-Stick (three and a half gallons) ........... $124.20
(coverage - five to six sq.ft. 1" thick)

Free shipping within the continental US.
To order by phone call 360 385 9974
Questions, overseas and custom orders call 360 385 9974 or email us
Return Policy

Material Safety Data
Product Data Sheet

Heat Cast-40
Castable refractory used to form and pour special shapes, hearth or oven dome.
HC40 Heat Cast-40 (40# bag) ............................ $83.80

Free shipping within the continental US.
To order by phone call 360 385 9974
Questions, overseas and custom orders call 360 385 9974 or email us
Return Policy

See also HI Cast 45 with service temperature to 2,700 deg.F

Material Safety Data
Product Data Sheet

Delta Crete-35 Insulating Castable
Light weight, insulating castable refractory used to back up and insulate firebrick, flue liners or clay ovens. Can be poured or troweled.
DC35 Delta Crete (50# bag) ................................ $114.20

Free shipping within the continental US.
To order by phone call 360 385 9974
Questions, overseas and custom orders call 360 385 9974 or email us
Return Policy

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