Simpson End Seal

Simpson End Seal: One solution for air leakage and sound transference requirements.The SES Simpson End Seal provides a fast and effective solution to reduce air leakage through ‘pocket masonry’ in block walls. Once installed, it removes the need for mastic sealant around the perimeter of joists (subject to good workmanship when mortar keying).

The SES is a cost effective way to help comply with the requirements of Part L (reduced air leakage) and Part E (reduced sound transference).

Technical Data Sheet

EPD

Product Details

Images

Features

Material

Pre-galvanised mild steel.

Application

Benefits

The SES allows for a full 100mm bearing of joist onto masonry walls.

Air leakage - reduces air leakage without the need for mastic sealant.
Sound - meets the sound requirements of a proprietary joist cap as specified by Appendix A, Robust Details Part E Handbook.
Fire - provides 1 hour of fire resistance (in compliance with approved Document B).
Can be used on external and party walls.
Meets the NHBC Technical requirements.
Secure fixing - provided by 30mm Square Twist Nails.

Technical Data

Dimensions

Product Dimensions & I-Joist Manufacturer

References	Product Dimensions [mm]			Weight [kg]	I-Joist Manufacturer
References	A	B	E	Weight [kg]	Masonite	MetsaWood	James Jones	Steico
SES101/45	45	157	101	0.14	-	-	JJI 195/47-45	-
SES118/45	45	174	118	0.131	-	FJI 200/45-36 FJI 200/53-36	-	S 200/45-39
SES122/45	45	178	122	0.15	M 220/45-47	-	JJI 200/47-45	-
SES138/45	45	194	138	0.15	M 240/47-47	FJI 220/45-36 FJI 220/53-36	JJI 235/47-45	S 220/45-39
SES151/45	45	207	151	0.163	-	FJI 240/45-36 FJI 240/53-36	JJI 245/47-45	S 240/45-39
SES202/45	45	258	202	0.214	M 300/47-47	-	JJI 300/47-45	-
SES218/45	45	274	218	0.23	-	FJI 200/45-36 FJI 300/53-36	-	S 300/45-39
SES278/45	45	338	278	0.289	-	FJI 360/45-36 FJI 360/53-36	-	S 360/45-39
SES118/60	60	174	118	0.154	-	-	-	S 200/60-39
SES122/60	60	178	122	0.16	M 220/60-47	-	JJI 220/63-45	-
SES138/60	60	194	138	0.18	M 240/60-47	-	JJI 235/63-45	S 220/60-39
SES151/60	60	207	151	0.192	-	-	JJI245/63-45	S 240/60-39
SES202/60	60	258	202	0.251	M 300/60-47	-	JJI 300/63-45	-
SES218/60	60	274	218	0.269	-	-	-	S 300/60-39
SES252/60	60	308	252	0.308	M 350/60-47	-	-	-
SES278/60	60	334	278	0.338	-	-	-	S 360/60-39
SES302/60	60	358	202	0.365	M 400/60-47	-	-	-
SES318/60	60	374	318	0.384	-	-	-	S 400/60-39
SES101/69	69	157	101	0.148	-	-	JJI 195/72-45	-
SES122/69	69	178	122	0.175	M 220/70-47	FJI 200/69-36	JJI 220/72-45	-
SES138/69	69	194	138	0.195	M 240/70-47	FJI 220/69-36	JJI 235/72-45	-
SES151/69	69	207	151	0.211	-	FJI 240/69-36	JJI 245/72-45	-
SES202/69	69	258	202	0.275	M 300/70-47	-	JJI 300/72-45	-
SES218/69	69	274	218	0.296	-	FJI 300/69-36	-	-
SES252/69	69	308	252	0.338	-	-	JJI 350/72-45	-
SES278/69	69	334	278	0.371	-	FJI 360/69-36	-	-
SES302/69	69	358	302	0.401	-	-	JJI 400/72-45	-
SES318/69	69	374	318	0.422	-	FJI 400/69-36	-	-
SES118/90	90	174	118	0.203	-	FJI 200/96-39	-	S 200/90-39
SES122/90	90	178	122	0.21	M 220/97-47	-	JJI 220/97-45	-
SES138/90	90	194	138	0.232	M 240/97-47	FJI 220/96-39	JJI 235/97-45	S 220/90-39
SES151/90	90	207	151	0.252	-	FJI 240/96-39	JJI 245/97-45	S 240/90-39
SES202/90	90	258	202	0.327	M 300/97-47	-	JJI 300/97-45	-
SES218/90	90	274	218	0.351	-	FJI 300/96-39	-	S 300/90-39
SES252/90	90	308	252	0.402	M 350/97-47	-	JJI 350/97-45	-
SES278/90	90	334	278	0.44	-	FJI 360/96-39	-	S 360/90-39
SES302/90	90	358	302	0.476	M 400/97-47	-	JJI 400/97-45	-
SES318/90	90	374	318	0.5	-	FJI 400/96-39	-	S 400/90-39

Installation

Step 1: Prepare block work to accept floor joists - no need for mortar on top. Position floor joists onto wall (only one joist shown for clarity). Fit the End Seal to the end of the joist as shown. Ensure that the End Seal is tight against the joist end and secure with 2 No 3.75x30 square twist nails.

Step 2: When preparing a double joist, repeat installation step 1 on the second I-Joist.

Step 3: Join the I-Joists together, use mastic or expanding foam between the two joists to ensure air tight seal. It is recommended that the I-Joists are joined together using 2 MJC (multi joist connector), one on top and one on the bottom of the I-Joist at 200mm from the bearing point (SDW screws can be used as an alternative to MJC). Check with I-Joist manufacturer.

Step 4: Apply mortar to the void between the top and bottom chords of the I-Joist on both sides of a single joist and to the outsides of a double joist, ensuring the mortar is packed against the End Seal.

Step 5: Lay a bed of mortar onto the top of the blocks ensuring mortar is laid tight up against the joist end. Lay blocks either side of the joist, ensuring mortar is applied to the block ends, completely fill all joints.

Lay the next bed of mortar on top of the blocks. Continue to build the wall as normal.