Reliable Water Repellent Sealants

Provide reliable protection from water and atmospheric moisture for a wide range of masonry surfaces, including highly alkaline mortars and cement rich materials, with Pecora’s 100% Silane and Water-Based Penetrating sealers and water repellents.

These high-quality water repellents create a hydrophobic barrier that prevents the intrusion of water and water-borne salts into the structure. This greatly reduces damaging moisture penetrations into masonry and concrete, helping to avoid salt leaching, freeze-thaw cracking and corrosion of reinforcing bars.

Products	Description
Pecora KlereSeal 910-W & 920-W	Water-Based Penetrating Sealer	Datasheets Array ( [0] => Array ( [ID] => 16675 [post_author] => 14 [post_date] => 2022-03-24 13:02:32 [post_date_gmt] => 2022-03-24 13:02:32 [post_content] => [post_title] => KlereSeal 910-W & 920-W Data Sheet [post_excerpt] => [post_status] => inherit [comment_status] => open [ping_status] => closed [post_password] => [post_name] => klereseal-910-w-920-w [to_ping] => [pinged] => [post_modified] => 2022-03-24 13:03:23 [post_modified_gmt] => 2022-03-24 13:03:23 [post_content_filtered] => [post_parent] => 2472 [guid] => https://www.pecora.com/wp-content/uploads/2016/01/KlereSeal-910-W-920-W.pdf [menu_order] => 0 [post_type] => attachment [post_mime_type] => application/pdf [comment_count] => 0 [pod_item_id] => 16675 ) ) KlereSeal 910-W & 920-W Data Sheet - 3/24/22	Sds Array ( [0] => Array ( [ID] => 14837 [post_author] => 14 [post_date] => 2021-02-11 14:45:52 [post_date_gmt] => 2021-02-11 14:45:52 [post_content] => [post_title] => KlereSeal 910-W & 920-W SDS [post_excerpt] => [post_status] => inherit [comment_status] => open [ping_status] => closed [post_password] => [post_name] => klereseal-910-w-and-920-w-sds [to_ping] => [pinged] => [post_modified] => 2022-03-24 13:03:23 [post_modified_gmt] => 2022-03-24 13:03:23 [post_content_filtered] => [post_parent] => 2472 [guid] => http://www.pecora.com/wp-content/uploads/2016/01/KlereSeal-910-W-and-920-W-SDS.pdf [menu_order] => 0 [post_type] => attachment [post_mime_type] => application/pdf [comment_count] => 0 [pod_item_id] => 14837 ) ) KlereSeal 910-W & 920-W SDS - 2/11/21	Color Chart	Brochure	Tech Bulletin Array ( [0] => Array ( [ID] => 629 [post_author] => 1 [post_date] => 2015-12-02 21:06:09 [post_date_gmt] => 2015-12-02 21:06:09 [post_content] => [post_title] => Tech_Bulletin_98_Klereseal_VOC [post_excerpt] => [post_status] => inherit [comment_status] => open [ping_status] => closed [post_password] => [post_name] => tech_bulletin_98_klereseal_voc [to_ping] => [pinged] => [post_modified] => 2022-03-24 13:02:44 [post_modified_gmt] => 2022-03-24 13:02:44 [post_content_filtered] => [post_parent] => 2472 [guid] => http://www.pecora.com/wp-content/uploads/2015/12/Tech_Bulletin_98_Klereseal_VOC.pdf [menu_order] => 0 [post_type] => attachment [post_mime_type] => application/pdf [comment_count] => 0 [pod_item_id] => 629 ) ) Tech Bulletin 98 Klereseal VOC - 12/2/15	Video
Pecora KlereSeal 9100-S	Silane Penetrating Clear Sealer	Datasheets Array ( [0] => Array ( [ID] => 14442 [post_author] => 14 [post_date] => 2020-10-26 15:15:26 [post_date_gmt] => 2020-10-26 15:15:26 [post_content] => [post_title] => Pecora KlereSeal 9100-S Data Sheet [post_excerpt] => [post_status] => inherit [comment_status] => open [ping_status] => closed [post_password] => [post_name] => klereseal-9100-s [to_ping] => [pinged] => [post_modified] => 2022-02-09 15:50:19 [post_modified_gmt] => 2022-02-09 15:50:19 [post_content_filtered] => [post_parent] => 2469 [guid] => http://www.pecora.com/wp-content/uploads/2016/01/KlereSeal-9100-S.pdf [menu_order] => 0 [post_type] => attachment [post_mime_type] => application/pdf [comment_count] => 0 [pod_item_id] => 14442 ) ) Pecora KlereSeal 9100-S Data Sheet - 10/26/20	Sds Array ( [0] => Array ( [ID] => 14216 [post_author] => 14 [post_date] => 2020-08-12 17:41:00 [post_date_gmt] => 2020-08-12 17:41:00 [post_content] => [post_title] => KlereSeal 9100-S SDS [post_excerpt] => [post_status] => inherit [comment_status] => open [ping_status] => closed [post_password] => [post_name] => klereseal-9100-s-sds-2 [to_ping] => [pinged] => [post_modified] => 2022-02-09 15:50:19 [post_modified_gmt] => 2022-02-09 15:50:19 [post_content_filtered] => [post_parent] => 2469 [guid] => http://www.pecora.com/wp-content/uploads/2016/01/KlereSeal-9100-S-SDS.pdf [menu_order] => 0 [post_type] => attachment [post_mime_type] => application/pdf [comment_count] => 0 [pod_item_id] => 14216 ) [1] => Array ( [ID] => 14218 [post_author] => 14 [post_date] => 2020-08-12 17:41:05 [post_date_gmt] => 2020-08-12 17:41:05 [post_content] => [post_title] => KlereSeal 9100-S SDS Spanish [post_excerpt] => [post_status] => inherit [comment_status] => open [ping_status] => closed [post_password] => [post_name] => klereseal-9100-s-sds_spanish [to_ping] => [pinged] => [post_modified] => 2020-10-26 15:15:44 [post_modified_gmt] => 2020-10-26 15:15:44 [post_content_filtered] => [post_parent] => 2469 [guid] => http://www.pecora.com/wp-content/uploads/2016/01/KlereSeal-9100-S-SDS_Spanish.pdf [menu_order] => 0 [post_type] => attachment [post_mime_type] => application/pdf [comment_count] => 0 [pod_item_id] => 14218 ) [2] => Array ( [ID] => 14217 [post_author] => 14 [post_date] => 2020-08-12 17:41:03 [post_date_gmt] => 2020-08-12 17:41:03 [post_content] => [post_title] => KlereSeal 9100-S SDS French [post_excerpt] => [post_status] => inherit [comment_status] => open [ping_status] => closed [post_password] => [post_name] => klereseal-9100-s-sds_french [to_ping] => [pinged] => [post_modified] => 2020-10-26 15:15:44 [post_modified_gmt] => 2020-10-26 15:15:44 [post_content_filtered] => [post_parent] => 2469 [guid] => http://www.pecora.com/wp-content/uploads/2016/01/KlereSeal-9100-S-SDS_French.pdf [menu_order] => 0 [post_type] => attachment [post_mime_type] => application/pdf [comment_count] => 0 [pod_item_id] => 14217 ) ) KlereSeal 9100-S SDS - 8/12/20 KlereSeal 9100-S SDS Spanish - 8/12/20 KlereSeal 9100-S SDS French - 8/12/20	Color Chart	Brochure	Tech Bulletin Array ( [0] => Array ( [ID] => 629 [post_author] => 1 [post_date] => 2015-12-02 21:06:09 [post_date_gmt] => 2015-12-02 21:06:09 [post_content] => [post_title] => Tech_Bulletin_98_Klereseal_VOC [post_excerpt] => [post_status] => inherit [comment_status] => open [ping_status] => closed [post_password] => [post_name] => tech_bulletin_98_klereseal_voc [to_ping] => [pinged] => [post_modified] => 2022-03-24 13:02:44 [post_modified_gmt] => 2022-03-24 13:02:44 [post_content_filtered] => [post_parent] => 2472 [guid] => http://www.pecora.com/wp-content/uploads/2015/12/Tech_Bulletin_98_Klereseal_VOC.pdf [menu_order] => 0 [post_type] => attachment [post_mime_type] => application/pdf [comment_count] => 0 [pod_item_id] => 629 ) [1] => Array ( [ID] => 582 [post_author] => 1 [post_date] => 2015-12-02 21:05:42 [post_date_gmt] => 2015-12-02 21:05:42 [post_content] => [post_title] => Tech_Bulletin_113_Klereseal_9100-S_Properties [post_excerpt] => [post_status] => inherit [comment_status] => open [ping_status] => closed [post_password] => [post_name] => tech_bulletin_113_klereseal_9100-s_properties [to_ping] => [pinged] => [post_modified] => 2020-10-26 15:15:44 [post_modified_gmt] => 2020-10-26 15:15:44 [post_content_filtered] => [post_parent] => 2469 [guid] => http://www.pecora.com/wp-content/uploads/2015/12/Tech_Bulletin_113_Klereseal_9100-S_Properties.pdf [menu_order] => 0 [post_type] => attachment [post_mime_type] => application/pdf [comment_count] => 0 [pod_item_id] => 582 ) ) Tech Bulletin 98 Klereseal VOC - 12/2/15 Tech Bulletin 113 Klereseal 9100-S Properties - 12/2/15	Video
Pecora KlereSeal 940-S VOC	Silane Penetrating Sealer	Datasheets Array ( [0] => Array ( [ID] => 15289 [post_author] => 14 [post_date] => 2021-03-22 13:47:40 [post_date_gmt] => 2021-03-22 13:47:40 [post_content] => [post_title] => KlereSeal® 940-S VOC Data Sheet [post_excerpt] => [post_status] => inherit [comment_status] => open [ping_status] => closed [post_password] => [post_name] => 149806_klereseal-940_pec135 [to_ping] => [pinged] => [post_modified] => 2022-02-09 15:52:52 [post_modified_gmt] => 2022-02-09 15:52:52 [post_content_filtered] => [post_parent] => 2468 [guid] => http://www.pecora.com/wp-content/uploads/2016/01/149806_klereseal-940_PEC135.pdf [menu_order] => 0 [post_type] => attachment [post_mime_type] => application/pdf [comment_count] => 0 [pod_item_id] => 15289 ) ) KlereSeal® 940-S VOC Data Sheet - 3/22/21	Sds Array ( [0] => Array ( [ID] => 14836 [post_author] => 14 [post_date] => 2021-02-11 14:40:44 [post_date_gmt] => 2021-02-11 14:40:44 [post_content] => [post_title] => KlereSeal® 940-S VOC SDS [post_excerpt] => [post_status] => inherit [comment_status] => open [ping_status] => closed [post_password] => [post_name] => klereseal-940-s-voc-sds [to_ping] => [pinged] => [post_modified] => 2022-02-09 15:52:52 [post_modified_gmt] => 2022-02-09 15:52:52 [post_content_filtered] => [post_parent] => 2468 [guid] => http://www.pecora.com/wp-content/uploads/2016/01/KlereSeal-940-S-VOC-SDS.pdf [menu_order] => 0 [post_type] => attachment [post_mime_type] => application/pdf [comment_count] => 0 [pod_item_id] => 14836 ) ) KlereSeal® 940-S VOC SDS - 2/11/21	Color Chart	Brochure	Tech Bulletin Array ( [0] => Array ( [ID] => 629 [post_author] => 1 [post_date] => 2015-12-02 21:06:09 [post_date_gmt] => 2015-12-02 21:06:09 [post_content] => [post_title] => Tech_Bulletin_98_Klereseal_VOC [post_excerpt] => [post_status] => inherit [comment_status] => open [ping_status] => closed [post_password] => [post_name] => tech_bulletin_98_klereseal_voc [to_ping] => [pinged] => [post_modified] => 2022-03-24 13:02:44 [post_modified_gmt] => 2022-03-24 13:02:44 [post_content_filtered] => [post_parent] => 2472 [guid] => http://www.pecora.com/wp-content/uploads/2015/12/Tech_Bulletin_98_Klereseal_VOC.pdf [menu_order] => 0 [post_type] => attachment [post_mime_type] => application/pdf [comment_count] => 0 [pod_item_id] => 629 ) ) Tech Bulletin 98 Klereseal VOC - 12/2/15	Video

Updated within past 30 days.

Pecora's goal is to provide our customers with comprehensive solutions - not just products. Pecora's experienced technical services representatives and sales representatives are available to answer your questions concerning sealant selection, requirements and recommendations on a per job basis. We also offer complete technical support.

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Required Dry Mil Coverage (mils)

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Estimating Made Easy

Make estimating the amount of sealant needed, for a wide range of projects, easy with Pecora's help. Use our convenient sealant calculator.

Single Joint Rectangular

Multiple Joints Rectangular

Single Joint Cylindrical

Multiple Joints Cylindrical

Primer Coverage

Enter Data:		Results
Width (in.)		Gallons
Depth (in.)		10.1 oz. Cartridges
Linear Ft.		2 Gallon Pails
Estimated waste (%)		5 Gallon Pails
		Sausage Packs
		1.5 Gallon Units
		1 Qt. Cartridges

Enter Data:				Results
	Width (in.)	Depth (in.)	Lin. Ft.
Joint 1				Gallons
Joint 2				10.1 oz. Cartridges
Joint 3				2 Gallon Pails
Joint 4				5 Gallon Pails
Joint 5				Sausage Packs
Estimated Waste (%):				1.5 Gallon Units
				1 Qt. Cartridges
				55 Gallon Drums

Choose one of the Calculators below:

XL-Flash - Window Openings

XL-Flash - Sheathing Seams and Penetrations

XL-Perm Ultra VP

XL-Perm Ultra NP

ProPerm VP

Enter Data:		Results
Substrate		Gallons Required
Total Sq.Ft. of Project		#5 Gallon Pails Required

Enter Data:		Results
Substrate		Gallons Required
Total Sq.Ft. of Project		#5 Gallon Pails Required

Enter Data:		Results
Substrate		Gallons Required
Total Sq.Ft. of Project		#5 Gallon Pails Required

To use: Enter values and press "Update" to recalculate. These calculators also update when you tab to the next field or click elsewhere in the page.

Enter Data:		Results
Window Height (in.)		Sausages Required
Window Width (in.)
# of Windows

Enter Data:		Results
Diameter (in.)		Gallons
Linear In.		10.1 oz. Cartridges
Estimated Waste (%):		2 Gallon Pails
		5 Gallon Pails
		Sausage Packs
		1.5 Gallon Units
		1 Qt. Cartridges

Enter Data:		Results
Total Linear Footage of Seams		Total Sq.Ft. of Project
		Sausages Required

Water Repellents

Reliable Water Repellent Sealants

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Pecora Calculator

Calculate material needs for Coatings, Sealants and Air Barriers.

Estimating Made Easy